67486 + Interview Questions in Secondary School in Physics

1.	Which describes a feature of the physical properties of all substances?can dissolve in watercan conduct heat and electricityrearranges atoms to form new substancesdoes not change the identity of a substance
Answer» Does not CHANGE the IDENTITY of SUBSTANCE

Discussion

2.	5.An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s–2?
Answer» Explanation: Given Mass of the automobile vehicle, m= 1500 kg Final velocity, V= 0 (FINALLY the automobile stops) Acceleration of the automobile, a= 1.7 ms2 FIND out We need to find the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 ms2 Solution Using, Newton’s SECOND law of MOTION Formula Force = Mass x Acceleration Substituting the known values we get F= 1500 x (1.7) = 2550 N Answer Hence, the force between the automobile and the road is 2550 N, in the direction opposite to the motion of the automobile.

2.

5.An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s–2?

Answer»

Explanation:

Given

Mass of the automobile vehicle, m= 1500 kg

Final velocity, V= 0 (FINALLY the automobile stops)

Acceleration of the automobile, a= 1.7 ms2

FIND out

We need to find the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 ms2

Solution

Using, Newton’s SECOND law of MOTION

Formula

Force = Mass x Acceleration

Substituting the known values we get

F= 1500 x (1.7) = 2550 N

Answer

Hence, the force between the automobile and the road is 2550 N, in the direction opposite to the motion of the automobile.

Discussion

3.	From a sphere of radius 1 m, a sphere of radius0.5 m is removed from the edge. The shift inthe C.M. is1) 13/16 m2) 16/13m3) 14/13 m4) 1/14 m
Answer» HII MY NAME ALSO VIVEK . AND UR ANSWER IS 1 / 14 ... HOPE IT HELPS YOU

3.

From a sphere of radius 1 m, a sphere of radius0.5 m is removed from the edge. The shift inthe C.M. is1) 13/16 m2) 16/13m3) 14/13 m4) 1/14 m

Answer»

HII MY NAME ALSO VIVEK .

AND UR ANSWER IS 1 / 14 ...

HOPE IT HELPS YOU

Discussion

4.	6.An object of mass 1 kg travelling in a straight line with a velocity of 10 m s–1 collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object.
Answer» αηѕωєя __________ Mass of the OBJECT, m1 = 1 kg Velocity of the object before collision, v1 = 10 m/s Mass of the STATIONARY wooden block, M2 = 5 kg Velocity of the wooden block before collision, v2 = 0 m/s ˆ´ TOTAL momentum before collision = m1 v1 + m2 v2 = 1 (10) + 5 (0) = 10 kg m sˆ’1 It is given that after collision, the object and the wooden block stick together. Total mass of the combined system = m1 + m2 Velocity of the combined object = v According to the law of conservation of momentum: Total momentum before collision = Total momentum after collision $m1 v1 + m2 v2 = (m1 + m2) v \\ [tex]m1 v1 + m2 v2 = (m1 + m2) v \\ 1 (10) + 5 (0) = (1 + 5) v \\ [tex]m1 v1 + m2 v2 = (m1 + m2) v \\ 1 (10) + 5 (0) = (1 + 5) v \\ v = 10 / 6 \\ [tex]m1 v1 + m2 v2 = (m1 + m2) v \\ 1 (10) + 5 (0) = (1 + 5) v \\ v = 10 / 6 \\ = 5 / 3$ The total momentum after collision is also 10 kg m/s. Total momentum just before the impact = 10 kg m sˆ’1 Total momentum just after the impact = (m1 + m2) v = 6 — 5 / 3 = 10 kg ms-1 Hence, velocity of the combined object after collision = 5 / 3 ms-1

4.

6.An object of mass 1 kg travelling in a straight line with a velocity of 10 m s–1 collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object.

Answer»

αηѕωєя

__________

Mass of the OBJECT, m1 = 1 kg

Velocity of the object before collision, v1 = 10 m/s

Mass of the STATIONARY wooden block, M2 = 5 kg

Velocity of the wooden block before collision, v2 = 0 m/s

ˆ´ TOTAL momentum before collision = m1 v1 + m2 v2

= 1 (10) + 5 (0) = 10 kg m sˆ’1

It is given that after collision, the object and the wooden block stick together.

Total mass of the combined system = m1 + m2

Velocity of the combined object = v

According to the law of conservation of momentum:

Total momentum before collision = Total momentum after collision

$m1 v1 + m2 v2 = (m1 + m2) v \\ [tex]m1 v1 + m2 v2 = (m1 + m2) v \\ 1 (10) + 5 (0) = (1 + 5) v \\ [tex]m1 v1 + m2 v2 = (m1 + m2) v \\ 1 (10) + 5 (0) = (1 + 5) v \\ v = 10 / 6 \\ [tex]m1 v1 + m2 v2 = (m1 + m2) v \\ 1 (10) + 5 (0) = (1 + 5) v \\ v = 10 / 6 \\ = 5 / 3$

The total momentum after collision is also 10 kg m/s.

Total momentum just before the impact = 10 kg m sˆ’1

Total momentum just after the impact = (m1 + m2) v = 6 — 5 / 3 = 10 kg ms-1

Hence, velocity of the combined
object after collision = 5 / 3 ms-1

Discussion

5.	Find angle between the two vectors, A=5i^+j^B=2i^+4j^
Answer» To find : ANGLE between VECTORS $\sf{\vec{A}}$ = 5 $\sf{\hat{i}}$ + $\sf{\hat{j}}$ and $\sf{\vec{B}}$ = 2 $\sf{\hat{i}}$ + 4 $\sf{\hat{j}}$ Answer : ▶ Dot product of $\sf{\vec{A}}$ and $\sf{\vec{B}}$ $:\implies\sf{\vec{A}\;.\;\vec{B}= (5\;\hat{i} + \hat{j} ) \;.\; ( 2\;\hat{i} + 4\;\hat{j})}$ $:\implies\sf{\vec{A}\;.\;\vec{B}= (5) (2) + (1) (4) }$ $:\implies\sf{\vec{A}\;.\;\vec{B}= 14}$ ▶ MAGNITUDE of vectors $:\implies\sf{\| \vec{A} \| = \sqrt{ (5)^2 + (1)^2 } }$ $:\implies\sf{\| \vec{A} \| = \sqrt{26} }$ and $:\implies\sf{\|B\|=\sqrt{(2)^2+ (4)^2}}$ $:\implies\sf{\|B\|=\sqrt{20}}$ ▶ Let, Angle between vectors $\sf{\vec{A}}$ and $\sf{\vec{B}}$ be $\theta$ then, $:\implies\sf{cos\;\theta=\dfrac{\vec{A} \;.\;\vec{B}}{\|\vec{A}\|\;.\;\|\vec{B}\|}}$ $:\implies\sf{cos\;\theta=\dfrac{14}{\sqrt{26}\;.\;\sqrt{20}}}$ $:\implies\sf{cos\;\theta=\dfrac{14}{\sqrt{520}}}$ $:\implies\sf{cos\;\theta=\dfrac{14}{2\sqrt{130}}}$ $:\implies\sf{cos\;\theta=\dfrac{7}{\sqrt{130}}}$ $:\implies\sf{cos\;\theta=\dfrac{7\sqrt{130}}{130}}$ $:\implies\sf{\theta=cos^{-1}\bigg(\dfrac{7\sqrt{130}}{130}\bigg)}$ $:\implies\boxed{\boxed{\large{\sf{\;\;\theta=52.125\;^{\circ}\;}}}}$ Therefore, Angle between vectors $\sf{\vec{A}}$ and $\sf{\vec{B}}$ will be 52.125°. (Approx.)

5.

Find angle between the two vectors, A=5i^+j^B=2i^+4j^

Answer»

To find :

ANGLE between VECTORS $\sf{\vec{A}}$ = 5 $\sf{\hat{i}}$ + $\sf{\hat{j}}$ and $\sf{\vec{B}}$ = 2 $\sf{\hat{i}}$ + 4 $\sf{\hat{j}}$

Answer :

▶ Dot product of $\sf{\vec{A}}$ and $\sf{\vec{B}}$

$:\implies\sf{\vec{A}\;.\;\vec{B}= (5\;\hat{i} + \hat{j} ) \;.\; ( 2\;\hat{i} + 4\;\hat{j})}$

$:\implies\sf{\vec{A}\;.\;\vec{B}= (5) (2) + (1) (4) }$

$:\implies\sf{\vec{A}\;.\;\vec{B}= 14}$

▶ MAGNITUDE of vectors

$:\implies\sf{| \vec{A} | = \sqrt{ (5)^2 + (1)^2 } }$

$:\implies\sf{| \vec{A} | = \sqrt{26} }$

and

$:\implies\sf{|B|=\sqrt{(2)^2+ (4)^2}}$

$:\implies\sf{|B|=\sqrt{20}}$

▶ Let, Angle between vectors $\sf{\vec{A}}$ and $\sf{\vec{B}}$ be $\theta$

then,

$:\implies\sf{cos\;\theta=\dfrac{\vec{A} \;.\;\vec{B}}{|\vec{A}|\;.\;|\vec{B}|}}$

$:\implies\sf{cos\;\theta=\dfrac{14}{\sqrt{26}\;.\;\sqrt{20}}}$

$:\implies\sf{cos\;\theta=\dfrac{14}{\sqrt{520}}}$

$:\implies\sf{cos\;\theta=\dfrac{14}{2\sqrt{130}}}$

$:\implies\sf{cos\;\theta=\dfrac{7}{\sqrt{130}}}$

$:\implies\sf{cos\;\theta=\dfrac{7\sqrt{130}}{130}}$

$:\implies\sf{\theta=cos^{-1}\bigg(\dfrac{7\sqrt{130}}{130}\bigg)}$

$:\implies\boxed{\boxed{\large{\sf{\;\;\theta=52.125\;^{\circ}\;}}}}$

Therefore,

Angle between vectors $\sf{\vec{A}}$ and $\sf{\vec{B}}$ will be 52.125°. (Approx.)

Discussion

6.	When we press the bulb of a dropper, with its nozzle kept under water, air in the dropper is seen to escape in the form of bubbles. If we then release the pressure on the bulb, water gets filled in the dropper. The rise of water in thedropper is due to - a) pressure of water in the container b) weight of the bulb c) gravity of the earthd) atmospheric pressure
Answer» Answer: answer is d)atmospheric pressure. SINCE when the dropper is released there is a LOW pressure on the INSIDE. due to this decrease or change in pressure , the outer ATMOSPHERIC pressure causes the rise in the WATER level

6.

When we press the bulb of a dropper, with its nozzle kept under water, air in the dropper is seen to escape in the form of bubbles. If we then release the pressure on the bulb, water gets filled in the dropper. The rise of water in thedropper is due to - a) pressure of water in the container b) weight of the bulb c) gravity of the earthd) atmospheric pressure

Answer»

Answer:

answer is d)atmospheric pressure. SINCE when the dropper is released there is a LOW pressure on the INSIDE. due to this decrease or change in pressure , the outer ATMOSPHERIC pressure causes the rise in the WATER level

Discussion

7.	An electric appliance of rating 900w is used 3 hours per day in the month ofDecember. Find the number of units consumed.
Answer» ANSWER: answer was a the TEN UNITS CONSUMED

7.

An electric appliance of rating 900w is used 3 hours per day in the month ofDecember. Find the number of units consumed.

Answer»

ANSWER:

answer was a the TEN UNITS CONSUMED

Discussion

8.	Prove that when projectiles are thrown at complementary angles, the range is equalDONOT SPAM...I NEED THE PROPER PROOF WITH PROPER EXPLANATION!!!PLEASE......DO IT ASAP
Answer» show that for TWO COMPLEMENTARY angles of PROJECTION of a projectile thrown with thw same VELOCITY. the horizontal ranges are equal. The range is maximum when sin2θ is maximum. So, for two angles, θ and 90 – θ the range of the projectile will be same. Your few explanation is in the picture

8.

Prove that when projectiles are thrown at complementary angles, the range is equalDONOT SPAM...I NEED THE PROPER PROOF WITH PROPER EXPLANATION!!!PLEASE......DO IT ASAP

Answer»

show that for TWO COMPLEMENTARY angles of PROJECTION of a projectile thrown with thw same VELOCITY. the horizontal ranges are equal. The range is maximum when sin2θ is maximum. So, for two angles, θ and 90 – θ the range of the projectile will be same.

Your few explanation is in the picture

Discussion

9.	EXERCISES1configuration.theratio ofJustify the position of hydrogen in the periodic table on the basis of its electronie
Answer» Answer: Hydrogen is the first element of the PERIODIC table & often called protium. Its ELECTRONIC configuration is [1s1]. Due to the presence of only one ELECTRON in its 1s shell, hydrogen exhibits a dual behaviour, i.e., it resembles both alkali METALS and halogens. mark me as brainleist.............

9.

EXERCISES1configuration.theratio ofJustify the position of hydrogen in the periodic table on the basis of its electronie

Answer»

Answer:

Hydrogen is the first element of the PERIODIC table & often called protium. Its ELECTRONIC configuration is [1s1]. Due to the presence of only one ELECTRON in its 1s shell, hydrogen exhibits a dual behaviour, i.e., it resembles both alkali METALS and halogens.

mark me as brainleist.............

Discussion

10.	Example 21 A particle starts from origin at t=0 with a velocity 5-0 î m/s and moves in x-yplane under action of a force which produces a constant acceleration of (3-0 î+ 20 )m/s2. (a) Whatis the y-coordinate of the particle at the instant its r-coordinate is 84 m ? (b) What is the speed of theparticle at this time?NCERT Scived Example
Answer» EXPLANATION: kkkkkkkkkkkkkkk WAIT

10.

Example 21 A particle starts from origin at t=0 with a velocity 5-0 î m/s and moves in x-yplane under action of a force which produces a constant acceleration of (3-0 î+ 20 )m/s2. (a) Whatis the y-coordinate of the particle at the instant its r-coordinate is 84 m ? (b) What is the speed of theparticle at this time?NCERT Scived Example

Answer»

EXPLANATION:

kkkkkkkkkkkkkkk WAIT

Discussion

11.	An object of mass 500 g, initially at rest, is actedupon by a variable force whose X-component varieswith X in the manner shown. The velocities of theobject at the points X = 8 m and X = 12 m, wouldhave the respective values of (nearly)(1) 18 m/s and 20.6 m/s (2) 18 m/s and 24.4 m/s(3) 23 m/s and 24.4 m/s (4) 23 m/s and 20.6 m/s
Answer» 23 m/s and 20.6 m/s is the correct answer... HOPE my answer will HELPFUL for you... MARK me as Brainliest PLEASE....

11.

An object of mass 500 g, initially at rest, is actedupon by a variable force whose X-component varieswith X in the manner shown. The velocities of theobject at the points X = 8 m and X = 12 m, wouldhave the respective values of (nearly)(1) 18 m/s and 20.6 m/s (2) 18 m/s and 24.4 m/s(3) 23 m/s and 24.4 m/s (4) 23 m/s and 20.6 m/s

Answer»

23 m/s and 20.6 m/s is the correct answer...

HOPE my answer will HELPFUL for you...

MARK me as Brainliest PLEASE....

Discussion

12.	A piece of stone attached to one end of a string is whirled round in a horizontal circle.Whathappens to the stone when the string is suddenly cut?
Answer» Answer: it will become just a SIMPLE STONE and TERE will be no value of this stone

12.

A piece of stone attached to one end of a string is whirled round in a horizontal circle.Whathappens to the stone when the string is suddenly cut?

Answer»

Answer:

it will become just a SIMPLE STONE and TERE will be no value of this stone

Discussion

13.	AH = a.A>P12. AH = bAH = d.AH = CAHEB.On the basis of Hess's law of constant heat summation, choose the correct relation:(1) b = a -d + c(2) c = a - b + d(3) d = a + b + c(4) a - c = b + d
Answer» EXPLANATION: OPTION 4 a - C = B+ d ........

13.

AH = a.A>P12. AH = bAH = d.AH = CAHEB.On the basis of Hess's law of constant heat summation, choose the correct relation:(1) b = a -d + c(2) c = a - b + d(3) d = a + b + c(4) a - c = b + d

Answer»

EXPLANATION:

OPTION 4 a - C = B+ d

........

Discussion

14.	Number of forces are acting on an object P such that the net forceacting on it zero. Number of forces are also acting on another object Qsuch that the net force acting on it is not zero.A) Balanced force acts on object Q and unbalanced force acts on object PO B) Unbalanced forces acts on both the objects P and QC) balanced force acts on object P and unbalanced force acts on object QO D) Balanced forces produces acceleration in the object.
Answer» Answer: If two FORCES act on an object in opposite directions, the net FORCE is the difference between the two forces. In this case, the net force is ALWAYS greater than or equal to zero but less than either of the INDIVIDUAL forces Explanation: PLS follow me and Mark me brainiest

14.

Number of forces are acting on an object P such that the net forceacting on it zero. Number of forces are also acting on another object Qsuch that the net force acting on it is not zero.A) Balanced force acts on object Q and unbalanced force acts on object PO B) Unbalanced forces acts on both the objects P and QC) balanced force acts on object P and unbalanced force acts on object QO D) Balanced forces produces acceleration in the object.

Answer»

Answer:

If two FORCES act on an object in opposite directions, the net FORCE is the difference between the two forces. In this case, the net force is ALWAYS greater than or equal to zero but less than either of the INDIVIDUAL forces

Explanation:

PLS follow me and Mark me brainiest

Discussion

15.	The magnitude of force between twomasses placed at a certain distance isF. What happens to F if (i) the distanceis doubled without any change in masses.(ii) The distance remains the same- but each mass is doubled (iii) The distanceis doubled and each mass is also doubled?
Answer» ANSWER: MAY it's HELPFUL to you..............

15.

The magnitude of force between twomasses placed at a certain distance isF. What happens to F if (i) the distanceis doubled without any change in masses.(ii) The distance remains the same- but each mass is doubled (iii) The distanceis doubled and each mass is also doubled?

Answer»

ANSWER:

MAY it's HELPFUL to you..............

Discussion

16.	. Growing of a tree is a reversible change. *A) TRUEB) FALSE
Answer» ANSWER: False Explanation: It's an irreversible change because once a TREE is grown up it can't change back into the small SAPLING. Hope it HELPS you!! Plz follow me.....

16.

. Growing of a tree is a reversible change. *A) TRUEB) FALSE

Answer»

ANSWER:

False

Explanation:

It's an irreversible change because once a TREE is grown up it can't change back into the small SAPLING.

Hope it HELPS you!! Plz follow me.....

Discussion

17.	Draw the diagram showing the experimental arrangements to verify the speed of diffusion of two gasses
Answer» <U> I HOPE this HELPS u . plz plz FOLLOW me and Mark me as brainliest PLEASE ✌✌

17.

Draw the diagram showing the experimental arrangements to verify the speed of diffusion of two gasses

Answer»

<U>

I HOPE this HELPS u .

plz plz FOLLOW me and Mark me as brainliest PLEASE ✌✌

Discussion

18.	What causes potential difference in household electricity ?Which are the devices used in circuit connected of household electricity ?
Answer» Answer 1 The battery establishes an electric potential difference across the two ends of the external circuit and thus causes the charge to flow. The battery voltage is the numerical VALUE of this electric potential difference. Answer 2 An electric circuit includes a DEVICE that gives ENERGY to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or TRANSMISSION lines. Hope this will HELP you...

18.

What causes potential difference in household electricity ?Which are the devices used in circuit connected of household electricity ?

Answer»

Answer 1

The battery establishes an electric potential difference across the two ends of the external circuit and thus causes the charge to flow. The battery voltage is the numerical VALUE of this electric potential difference.

Answer 2

An electric circuit includes a DEVICE that gives ENERGY to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or TRANSMISSION lines.

Hope this will HELP you...

Discussion

19.	Hey guys!The answer for this question is given option 4: none of the above...can anyone elaborate how??
Answer» EXPLANATION: OPTION 4 is RIGHT....... ...

19.

Hey guys!The answer for this question is given option 4: none of the above...can anyone elaborate how??

Answer»

EXPLANATION:

OPTION 4 is RIGHT....... ...

Discussion

20.	An object is placed in front of a convex mirror of focal length 15 em. Itproduces an image that is half the size of the object. Find (a) position ofthe object, (b) nature of the image, and (c) draw the ray diagram of imageformation
Answer» this CORRECT I THINK so SISTER BYE

20.

An object is placed in front of a convex mirror of focal length 15 em. Itproduces an image that is half the size of the object. Find (a) position ofthe object, (b) nature of the image, and (c) draw the ray diagram of imageformation

Answer»

this CORRECT I THINK so SISTER BYE

Discussion

21.	Velocity time graph of the manif a perrticle is a straight the asShotun in fistere Draw comeffantinggraph between acceleration and time.stIMNCimmis)2+1t (in second
Answer» ANSWER: you do it in your own GRAPH PAPER not to ASK this QUESTION

21.

Velocity time graph of the manif a perrticle is a straight the asShotun in fistere Draw comeffantinggraph between acceleration and time.stIMNCimmis)2+1t (in second

Answer»

ANSWER:

you do it in your own GRAPH PAPER not to ASK this QUESTION

Discussion

22.	एन ऑब्जेक्ट विच प्लेस इन फ्रंट ऑफ कॉन्वेक्स मिरर आफ फोकल लेंथ 10 सेंटीमीटर प्रोसेस एंड इमेज दैट इज हैवी साइज आफ थे ऑब्जेक्ट फाइंड टू रेशनल की ऑफ द नेचुरल इमेज एंड रोड़ी रे डायग्राम ऑफ इंफॉर्मेशन...plzz frnds help me
Answer» HELP best friend Study later ANSWER Given; Focal length, f=20cm OBJECT distance, u=−10cm Using MIRROR formula. v 1 + u 1 = f 1 v 1 = f 1 − u 1 = 20 1 − −10 1 (∵u=−10) = 20 1 + 10 1 = 20 3 ⇒v= 3 20 cm HOPE IT HELPS YOU FRIEND

22.

एन ऑब्जेक्ट विच प्लेस इन फ्रंट ऑफ कॉन्वेक्स मिरर आफ फोकल लेंथ 10 सेंटीमीटर प्रोसेस एंड इमेज दैट इज हैवी साइज आफ थे ऑब्जेक्ट फाइंड टू रेशनल की ऑफ द नेचुरल इमेज एंड रोड़ी रे डायग्राम ऑफ इंफॉर्मेशन...plzz frnds help me

Answer»

HELP best friend

Study later

ANSWER

Given; Focal length, f=20cm

OBJECT distance, u=−10cm

Using MIRROR formula.

v

1

+

u

1

=

f

1

v

1

=

f

1

−

u

1

=

20

1

−

−10

1

(∵u=−10)

=

20

1

+

10

1

=

20

3

⇒v=

3

20

cm

HOPE IT HELPS YOU FRIEND

Discussion

23.	Velocity time graph of the motionof a particle is a straight line asShotan in fisture. Draw comesportinggraph between acceleration and time.Cimmis)21t (in second)
Answer» EXPLANATION: from TIME 2 - 3s slope is INCREASE so in a-t graph a is 3 m/s^2,in time 3-6 v is constant so a is 0 from time 6-8 the slope is -ve so a is -1.5

23.

Velocity time graph of the motionof a particle is a straight line asShotan in fisture. Draw comesportinggraph between acceleration and time.Cimmis)21t (in second)

Answer»

EXPLANATION:

from TIME 2 - 3s slope is INCREASE so in a-t graph a is 3 m/s^2,in time 3-6 v is constant so a is 0 from time 6-8 the slope is -ve so a is -1.5

Discussion

24.	1. when we enter a dim light room from a bright light, we're not able to see the object for sometime. explain why2. why do we have two eyes Instead of one
Answer» Answer: 1. It takes some time to see objects in a dim or dark ROOM when we ENTER the room from the bright sunlight outside because in bright sunshine the pupil of our EYE is small. HENCE, as we enter a dim room, very little light enters our eyes and we can't see properly. 2. We need two eyes because a human being has a horizontal field of view of about 150° with one eye and of about 180° with two eyes. Thus, two eyes provide us wider horizontal field of view. With one eye, the world looks flat, i.e., two DIMENSIONAL only.

24.

1. when we enter a dim light room from a bright light, we're not able to see the object for sometime. explain why2. why do we have two eyes Instead of one

Answer»

Answer:

1. It takes some time to see objects in a dim or dark ROOM when we ENTER the room from the bright sunlight outside because in bright sunshine the pupil of our EYE is small. HENCE, as we enter a dim room, very little light enters our eyes and we can't see properly.

2. We need two eyes because a human being has a horizontal field of view of about 150° with one eye and of about 180° with two eyes. Thus, two eyes provide us wider horizontal field of view. With one eye, the world looks flat, i.e., two DIMENSIONAL only.

Discussion

25.	A car covers 75 km of its journey at60 km/hr, the next 45 km at a speed of 30km/hr and the remaining part of the journey in 2 firs and 15 min. If the aver-age speed for the journey was 45 km/hr, how muchdistance was covered in the last part of the journey?a) 100 km c) 80 kmb) 90 km d] 180 km
Answer» Answer: Let the TOTAL distance TRAVELLED be x KM Then total time taken = 10 x/3 + 20 x/3 + 60 x/3 = 30 x + 60 x + 180 x = 180 6x+3x+x = 180 10x = 18 x hrs Then AVERAGE speed = = Totaltimetaken Totaldistancetravelled = x/18 x km/hr = 18 km/hr

25.

A car covers 75 km of its journey at60 km/hr, the next 45 km at a speed of 30km/hr and the remaining part of the journey in 2 firs and 15 min. If the aver-age speed for the journey was 45 km/hr, how muchdistance was covered in the last part of the journey?a) 100 km c) 80 kmb) 90 km d] 180 km

Answer»

Answer:

Let the TOTAL distance TRAVELLED be x KM Then total time taken =

10

x/3

+

20

x/3

+

60

x/3

=

30

x

+

60

x

+

180

x

=

180

6x+3x+x

=

180

10x

=

18

x

hrs Then AVERAGE speed = =

Totaltimetaken

Totaldistancetravelled

=

x/18

x

km/hr = 18 km/hr

Discussion

26.	Leurs, dra meteorites.Distillyu6.MEMWhat are 'Phases of the Moon'? Draw a rough diagram of any two phases and name them.List five uses of artificial satellites.
Answer» ANSWER: okk KKKKKKKKKKKKK Explanation: MARK AS BRAINLIST

26.

Leurs, dra meteorites.Distillyu6.MEMWhat are 'Phases of the Moon'? Draw a rough diagram of any two phases and name them.List five uses of artificial satellites.

Answer»

ANSWER:

okk

KKKKKKKKKKKKK

Explanation:

MARK AS BRAINLIST

Discussion

27.	Calculate the equivalent resistance of 30 ohm,20 ohm and 60 ohm:a)when connected in seriesb) when connected in parallel.
Answer» EXPLANATION: HOPE it's HELP U ❤❤❤❤❤❤❤❤❤❤

27.

Calculate the equivalent resistance of 30 ohm,20 ohm and 60 ohm:a)when connected in seriesb) when connected in parallel.

Answer»

EXPLANATION:

HOPE it's HELP U ❤❤❤❤❤❤❤❤❤❤

Discussion

28.	FoFig. 3.339. Write the expression for the moment of forceabout a given axis of rotation.
Answer» ANSWER: SORRY DOST.............BHAJI

28.

FoFig. 3.339. Write the expression for the moment of forceabout a given axis of rotation.

Answer»

ANSWER:

SORRY DOST.............BHAJI

Discussion

29.	If a charge of 420 C flows througha conducting wire in 5 minuteswhat is the value of the current?(Answer : 1.4 A)
Answer» Answer: As the current flowing through a conductor can be FOUNDED ad I = Q/t = 420/ (5 × 60) = 420/300 = 1.4A Explanation: I HOPE this will help you.Thank you.Please follow me or RATE me.

29.

If a charge of 420 C flows througha conducting wire in 5 minuteswhat is the value of the current?(Answer : 1.4 A)

Answer»

Answer:

As the current flowing through a conductor can be FOUNDED ad

I = Q/t

= 420/ (5 × 60)

= 420/300

= 1.4A

Explanation:

I HOPE this will help you.Thank you.Please follow me or RATE me.

Discussion

30.	A person moves points from AtoB 8 kg and he change direction mmoves 6kg B to C find displacement
Answer» ANSWER: MARK it as BRAINLIEST for complete answer displacement = 16 Explanation:

30.

A person moves points from AtoB 8 kg and he change direction mmoves 6kg B to C find displacement

Answer»

ANSWER: MARK it as BRAINLIEST for complete answer

displacement = 16

Explanation:

Discussion

31.	1 point10. How do we calculateNumber of teams in upperhalf? हम ऊपरी अर्ध में टीमों कीसंख्या की गणना कैसे करते हैं?ON-1ON+1ON+1/2ON-1/2O O
Answer» ANSWER: C n+1/2 EXPLANATION: mark as brainliest PLEASE

31.

1 point10. How do we calculateNumber of teams in upperhalf? हम ऊपरी अर्ध में टीमों कीसंख्या की गणना कैसे करते हैं?ON-1ON+1ON+1/2ON-1/2O O

Answer»

ANSWER:

C n+1/2

EXPLANATION:

mark as brainliest PLEASE

Discussion

32.	Three resistance of value 12 ohm,3ohm and 15ohm are connected in series across 20v ,D.C supply calculateda. equivalent resistance of the circuitb. the total current of the circuitc.the voltage drop across each resistor.
Answer» Explanation: 1. a. 12+ 3+ 15 =30 ohm b. i = 2/3 c. v1= 12V V2 = 2v V3 = 6v

32.

Three resistance of value 12 ohm,3ohm and 15ohm are connected in series across 20v ,D.C supply calculateda. equivalent resistance of the circuitb. the total current of the circuitc.the voltage drop across each resistor.

Answer»

Explanation:

1.

a. 12+ 3+ 15 =30 ohm

b. i = 2/3

c. v1= 12V

V2 = 2v

V3 = 6v

Discussion

33.	A) Determine the electrostatic potentialenergy of a system consisting of twocharge Tud s-2pc repectively.b) how much work is required to seperate two charges infinitly away from each other?
Answer» EXPLANATION: gshrshrsjtऋजचःजोअःझोअःजोअःजोअंजीऊhrshrsursi5di5di5ei5dk5di5wi4w

33.

A) Determine the electrostatic potentialenergy of a system consisting of twocharge Tud s-2pc repectively.b) how much work is required to seperate two charges infinitly away from each other?

Answer»

EXPLANATION:

gshrshrsjtऋजचःजोअःझोअःजोअःजोअंजीऊhrshrsursi5di5di5ei5dk5di5wi4w

Discussion

34.	An N-type semiconductor has hall coefficient 4.16⨉ 10-4 m³/C. The conductivity is10 -8 S /m. calculate its charge carrier density ne and electron mobility at room temperature.
Answer» ANSWER: it's 129 I don't no PLEASE like and give five star hsusuwuhhahauwwhvgffhgf ggfdxďdufkiy hgfcuyd vvhfc Explanation: Please please please place llspwpw

34.

An N-type semiconductor has hall coefficient 4.16⨉ 10-4 m³/C. The conductivity is10 -8 S /m. calculate its charge carrier density ne and electron mobility at room temperature.

Answer»

ANSWER:

it's 129 I don't no PLEASE like and give five star hsusuwuhhahauwwhvgffhgf ggfdxďdufkiy hgfcuyd vvhfc

Explanation:

Please

please

place

llspwpw

Discussion

35.	A. Consider the 3 circuit shown in figureanalysis each circuit & demonstrate thatVx= vx ' and vx ''b. Consider the 3 ckt & draw thevenin and Nortonequivalent ckt While RL=3kohm.c. Consider the 3 circuit find power delivered to 3 kohm.
Answer» ANSWER: akalsks sksksssmsks DOME mdiemdkdme d

35.

A. Consider the 3 circuit shown in figureanalysis each circuit & demonstrate thatVx= vx ' and vx ''b. Consider the 3 ckt & draw thevenin and Nortonequivalent ckt While RL=3kohm.c. Consider the 3 circuit find power delivered to 3 kohm.

Answer»

ANSWER:

akalsks sksksssmsks DOME mdiemdkdme d

Discussion

36.	7. The position of a particle w...ttimet along x-axis is given by x = 91?-t' where x is in metre and t insecond. Find(a) Maximum speed along +x direction(b) Position of turning point(c) Displacement in first ten seconds(d) Distance travelled in first ten seconds
Answer» asdfghjklpoiuytrewqzxcvb

36.

7. The position of a particle w...ttimet along x-axis is given by x = 91?-t' where x is in metre and t insecond. Find(a) Maximum speed along +x direction(b) Position of turning point(c) Displacement in first ten seconds(d) Distance travelled in first ten seconds

Answer»

asdfghjklpoiuytrewqzxcvb

Discussion

37.	Page1) Find the currents and voltageacross Each resistor for thenetwork, shown in fig using loop analysis method
Answer» ANSWER: ★彡 •♥•♥•♥ PLEASE MARK ME AS BRAINLEAST ♥•♥•♥• 彡★ ˙·٠•●♥ PLEASE FOLLOW ME ♥●•٠·˙

37.

Page1) Find the currents and voltageacross Each resistor for thenetwork, shown in fig using loop analysis method

Answer»

ANSWER:

★彡 •♥•♥•♥ PLEASE MARK ME AS BRAINLEAST ♥•♥•♥• 彡★

˙·٠•●♥ PLEASE FOLLOW ME ♥●•٠·˙

Discussion

38.	A drivera carcanin 50.of travelling at 52 km/h applies the brakesand accelerates uniformlyin the opposite. The stopsAnother driver goingat 3km/h in another can applieshis brakes slowly and stops ingraph paper,plot the speed versus time graphs for the 2 cars. Which ofthe two cars travelled farther after the brakes were applied?los. On the same
Answer» ANSWER: "graphs" (and any subsequent words) was ignored because we limit queries to 32 words. Image result for A driver a car can in 50. of travelling at 52 km/h applies the brakes and ACCELERATES uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in graph paper, PLOT the speed versus time graphs for the 2 cars. Which of the two cars TRAVELLED further after the brakes were applied? los. On the same Image result for A driver a car can in 50. of travelling at 52 km/h applies the brakes and accelerates uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in graph paper, plot the speed versus time graphs for the 2 cars. Which of the two cars travelled further after the brakes were applied? los. On the same Image result for A driver a car can in 50. of travelling at 52 km/h applies the brakes and accelerates uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in graph paper, plot the speed versus time graphs for the 2 cars. Which of the two cars travelled further after the brakes were applied? los. On the same View all A driver of a car travelling at 52 km h–1 applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h–1 in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars.

38.

A drivera carcanin 50.of travelling at 52 km/h applies the brakesand accelerates uniformlyin the opposite. The stopsAnother driver goingat 3km/h in another can applieshis brakes slowly and stops ingraph paper,plot the speed versus time graphs for the 2 cars. Which ofthe two cars travelled farther after the brakes were applied?los. On the same

Answer»

ANSWER:

"graphs" (and any subsequent words) was ignored because we limit queries to 32 words.

Image result for A driver a car can in 50. of travelling at 52 km/h applies the brakes and ACCELERATES uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in graph paper, PLOT the speed versus time graphs for the 2 cars. Which of the two cars TRAVELLED further after the brakes were applied? los. On the same

Image result for A driver a car can in 50. of travelling at 52 km/h applies the brakes and accelerates uniformly in the opposite. The stops Another driver going at 3km/h in another can applies his brakes slowly and stops in graph paper, plot the speed versus time graphs for the 2 cars. Which of the two cars travelled further after the brakes were applied? los. On the same

View all

A driver of a car travelling at 52 km h–1 applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h–1 in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars.

Discussion

39.	Two vehicles start from the same point with velocity 10kmph and 30kmph along two roads. If angle between the tracks is 60 degree, determine the distance between the vehicles after 12 minutes.a)40 kmb)8 kmc)4 kmd)2×root 7
Answer» ANSWER: OPTION C...... but I am not SURE

39.

Two vehicles start from the same point with velocity 10kmph and 30kmph along two roads. If angle between the tracks is 60 degree, determine the distance between the vehicles after 12 minutes.a)40 kmb)8 kmc)4 kmd)2×root 7

Answer»

ANSWER:

OPTION C...... but I am not SURE

Discussion

40.	1(3i+4j-5kV50If Ã = B - C, then determine the angle betweenand B.Hint :Č= B - Å, č. Č= (B - Ả• (B - ÅA? + B2 - 02Ans. 0 = cos2 AB-1If Ã = 3î + 2ị and B =î -2į + 3 k, then find thmagnitudes of A + B and A - B. Ans. 5, 129Thesum andand difference of two
Answer» EXPLANATION: dunnno ..............

40.

1(3i+4j-5kV50If Ã = B - C, then determine the angle betweenand B.Hint :Č= B - Å, č. Č= (B - Ả• (B - ÅA? + B2 - 02Ans. 0 = cos2 AB-1If Ã = 3î + 2ị and B =î -2į + 3 k, then find thmagnitudes of A + B and A - B. Ans. 5, 129Thesum andand difference of two

Answer»

EXPLANATION:

dunnno ..............

Discussion

41.	A man has to go 50 m due North, 40 m due East and 20 m due South to reach a field. The distance he hasto walk to reach the field and the magnitude of displacement from his house to the field respectively area) 90 m, 75 mb) 110 m, 50 mc) 50 m, 110 m d) 75 m, 110 m
Answer» Explanation: 110 m, 50 m ANSWER Distance =50+40+20=110m Displacement OC= 40 2 +30 2 =50m and the direction is along OC. solution

41.

A man has to go 50 m due North, 40 m due East and 20 m due South to reach a field. The distance he hasto walk to reach the field and the magnitude of displacement from his house to the field respectively area) 90 m, 75 mb) 110 m, 50 mc) 50 m, 110 m d) 75 m, 110 m

Answer»

Explanation:

110 m, 50 m

ANSWER

Distance =50+40+20=110m

Displacement OC=

40

2

+30

2

=50m and the direction is along OC.

solution

Discussion

42.	11) Find the currents and voltage actors such rexistros fautenetwork, shown in fig wringfig using loop analysis methodhtIDVਹੈ Shor
Answer» ANSWER: ★彡 •♥•♥•♥ PLEASE MARK ME AS BRAINLEAST ♥•♥•♥• 彡★ ˙·٠•●♥ PLEASE FOLLOW ME ♥●•٠·˙

42.

11) Find the currents and voltage actors such rexistros fautenetwork, shown in fig wringfig using loop analysis methodhtIDVਹੈ Shor

Answer»

ANSWER:

★彡 •♥•♥•♥ PLEASE MARK ME AS BRAINLEAST ♥•♥•♥• 彡★

˙·٠•●♥ PLEASE FOLLOW ME ♥●•٠·˙

Discussion

43.	G=gm/r squareg=gm/r square
Answer» ...................

Discussion

44.	A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation.(With step by step) I'll mark as brainliest
Answer» ANSWER: don't KNOW BRO SORRY for that OKK

44.

A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation.(With step by step) I'll mark as brainliest

Answer»

ANSWER:

don't KNOW BRO SORRY for that OKK

Discussion

45.	In a circular motion of a particle the tangential acceleration of the particle is given by aj = 2t m/s2Where't' is the time, the radius of the circle described is 4m. The particle is initially a rest. Timeafter which total acceleration of the particle makes 450 with radial acceleration is:
Answer» ANSWER: CHECK on GOOGLE,MAY be there

45.

In a circular motion of a particle the tangential acceleration of the particle is given by aj = 2t m/s2Where't' is the time, the radius of the circle described is 4m. The particle is initially a rest. Timeafter which total acceleration of the particle makes 450 with radial acceleration is:

Answer»

ANSWER:

CHECK on GOOGLE,MAY be there

Discussion

46.	Consider three charges are placed apart with some distancewhat will be the net force experienced in q1 due to q2, q3?
Answer» ANSWER: NET force will be the sum of all the three FORCES ACTING on it and the property is CALLS as superimpostion

46.

Consider three charges are placed apart with some distancewhat will be the net force experienced in q1 due to q2, q3?

Answer»

ANSWER:

NET force will be the sum of all the three FORCES ACTING on it and the property is CALLS as superimpostion

Discussion

47.	1.1 pointताप बड़ने पर परवैधुतांक K का मानबढ़ता हैघटता हैपरिवर्तित रहता हैअनियमित रूप से बदलता है1.1 pointताप बड़ने पर परवैधुतांक K का मानबढ़ता हैघटता हैपरिवर्तित रहता हैअनियमित रूप से बदलता है
Answer» ANSWER: EXPLANATION:विद्युत क्षेत्र लगाने पर परावैद्युत पदार्थ का ध्रुवण (पोलराइजेशन) ... किसी पदार्थ के ध्रुवण की मात्रा को उसके परावैद्युत स्थिरांक (DIELECTRIC CONSTANT) या ... परावैद्युत पदार्थों का एक प्रमुख उपयोग संधारित्र की प्लेटों के बीच में किया जाता है ताकि समान आकार में ... पुस्तक बनायें · पीडीएफ़ रूप डाउनलोड करें · प्रिन्ट करने लायक ... अन्तिम परिवर्तन

47.

1.1 pointताप बड़ने पर परवैधुतांक K का मानबढ़ता हैघटता हैपरिवर्तित रहता हैअनियमित रूप से बदलता है1.1 pointताप बड़ने पर परवैधुतांक K का मानबढ़ता हैघटता हैपरिवर्तित रहता हैअनियमित रूप से बदलता है

Answer»

ANSWER:

EXPLANATION:विद्युत क्षेत्र लगाने पर परावैद्युत पदार्थ का ध्रुवण (पोलराइजेशन) ... किसी पदार्थ के ध्रुवण की मात्रा को उसके परावैद्युत स्थिरांक (DIELECTRIC CONSTANT) या ... परावैद्युत पदार्थों का एक प्रमुख उपयोग संधारित्र की प्लेटों के बीच में किया जाता है ताकि समान आकार में ... पुस्तक बनायें · पीडीएफ़ रूप डाउनलोड करें · प्रिन्ट करने लायक ... अन्तिम परिवर्तन

Discussion

48.	Iii) 300 mmol of perfect gas occupies 13 dm3at 320 K. Calculate the work done in jouleswhen the gas expands :a) Isothermally against a constant externalpressure of 0.20 bar,b) Isothermal and reversible process,c) Into vacuum until the volume of gas isincreased by 3 dm'. (R = 8.314 J moleK-)
Answer» this is your ANSWER HOPE it HELPS :::::):(:)

48.

Iii) 300 mmol of perfect gas occupies 13 dm3at 320 K. Calculate the work done in jouleswhen the gas expands :a) Isothermally against a constant externalpressure of 0.20 bar,b) Isothermal and reversible process,c) Into vacuum until the volume of gas isincreased by 3 dm'. (R = 8.314 J moleK-)

Answer»

this is your ANSWER

HOPE it HELPS :::::):(:)

Discussion

49.	1point2. what is the aim ofplanning in sports? खेलों मेंयोजना बनाने का उद्देश्य क्या है ?OTo entertain मनोरंजन के लिएTo make coordination betweenOplayers खिलाड़ियों के बीच समन्वयबनाने के लिएO OTo complete the tournamentकरने के लिएटूर्नामेंट पूराPyMONTo make tournamentsuccessful टूर्नामेंट को सफल बनानेके लिए
Answer» Answer: To make co- ordination between player and to win the match Explanation: The reason why I gave this answer is that always in sports planning is very important because if you DONT have planning the players will PLAY as they want and because of which if there is a captain in a team he will be useless so planning is always important in anything not only LN sports but in everything *THANK* *YOU* *HAVE* A *GOOD* *DAY*

49.

1point2. what is the aim ofplanning in sports? खेलों मेंयोजना बनाने का उद्देश्य क्या है ?OTo entertain मनोरंजन के लिएTo make coordination betweenOplayers खिलाड़ियों के बीच समन्वयबनाने के लिएO OTo complete the tournamentकरने के लिएटूर्नामेंट पूराPyMONTo make tournamentsuccessful टूर्नामेंट को सफल बनानेके लिए

Answer»

Answer:

To make co- ordination between player and to win the match

Explanation:

The reason why I gave this answer is that always in sports planning is very important because if you DONT have planning the players will PLAY as they want and because of which if there is a captain in a team he will be useless so planning is always important in anything not only LN sports but in everything

THANK YOU

HAVE A GOOD DAY

Discussion

50.	A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation.(With step by step) I'll mark as brainliest
Answer» ANSWER : ⠀⠀⠀⠀⠀ ⠀⠀⠀ $\bullet$ ⠀Frequency [V] = 980 kHz ⠀⠀⠀⠀⠀ $\implies\sf 980 \times 10^{3} Hz$ ⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀Using Formula : ⠀⠀⠀⠀ $\star\: \: \boxed{\frak{ v = \dfrac{c}{\lambda}}}$ $\qquad\qquad\quad\underline{\sf{Substituting \ Values \ :}}$ ⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━ ⠀⠀⠀⠀⠀Now Finding WAVELENGTH : ⠀⠀⠀⠀ $\implies\sf v = \dfrac{ 3 \times 10^{8} ms^{-1}}{980 \times 10^{3}} \\\\\\\implies\sf \dfrac{3}{98} \times 10^{4} \\\\\\\implies\boxed{\frak{\purple{306 \ m}}}$ HENCE, wavelength of the electromagnetic RADIATION is 306 m.

50.

A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation.(With step by step) I'll mark as brainliest

Answer»

ANSWER :

⠀⠀⠀⠀⠀

⠀⠀⠀ $\bullet$ ⠀Frequency [V] = 980 kHz

⠀⠀⠀⠀⠀

$\implies\sf 980 \times 10^{3} Hz$

⠀⠀⠀⠀

⠀⠀⠀⠀⠀⠀⠀⠀Using Formula :

⠀⠀⠀⠀

$\star\: \: \boxed{\frak{ v = \dfrac{c}{\lambda}}}$

$\qquad\qquad\quad\underline{\sf{Substituting \ Values \ :}}$

⠀⠀⠀━━━━━━━━━━━━━━━━━━━━━━━━━━

⠀⠀⠀⠀⠀Now Finding WAVELENGTH : ⠀⠀⠀⠀

$\implies\sf v = \dfrac{ 3 \times 10^{8} ms^{-1}}{980 \times 10^{3}} \\\\\\\implies\sf \dfrac{3}{98} \times 10^{4} \\\\\\\implies\boxed{\frak{\purple{306 \ m}}}$

HENCE, wavelength of the electromagnetic RADIATION is 306 m.

Discussion

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αηѕωєя

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Find angle between the two vectors, A=5i^+j^B=2i^+4j^

To find :

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I HOPE this HELPS u .

plz plz FOLLOW me and Mark me as brainliest PLEASE ✌✌

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A person moves points from AtoB 8 kg and he change direction mmoves 6kg B to C find displacement​

1 point10. How do we calculateNumber of teams in upperhalf? हम ऊपरी अर्ध में टीमों कीसंख्या की गणना कैसे करते हैं?ON-1ON+1ON+1/2ON-1/2O O​

Three resistance of value 12 ohm,3ohm and 15ohm are connected in series across 20v ,D.C supply calculateda. equivalent resistance of the circuitb. the total current of the circuitc.the voltage drop across each resistor.​

A) Determine the electrostatic potentialenergy of a system consisting of twocharge Tud s-2pc repectively.b) how much work is required to seperate two charges infinitly away from each other?​

An N-type semiconductor has hall coefficient 4.16⨉ 10-4 m³/C. The conductivity is10 -8 S /m. calculate its charge carrier density ne and electron mobility at room temperature.

A. Consider the 3 circuit shown in figureanalysis each circuit & demonstrate thatVx= vx ' and vx ''b. Consider the 3 ckt & draw thevenin and Nortonequivalent ckt While RL=3kohm.c. Consider the 3 circuit find power delivered to 3 kohm.​

7. The position of a particle w...ttimet along x-axis is given by x = 91?-t' where x is in metre and t insecond. Find(a) Maximum speed along +x direction(b) Position of turning point(c) Displacement in first ten seconds(d) Distance travelled in first ten seconds​

Page1) Find the currents and voltageacross Each resistor for thenetwork, shown in fig using loop analysis method​

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Two vehicles start from the same point with velocity 10kmph and 30kmph along two roads. If angle between the tracks is 60 degree, determine the distance between the vehicles after 12 minutes.a)40 kmb)8 kmc)4 kmd)2×root 7​

1(3i+4j-5kV50If Ã = B - C, then determine the angle betweenand B.Hint :Č= B - Å, č. Č= (B - Ả• (B - ÅA? + B2 - 02Ans. 0 = cos2 AB-1If Ã = 3î + 2ị and B =î -2į + 3 k, then find thmagnitudes of A + B and A - B. Ans. 5, 129Thesum andand difference of two​

A man has to go 50 m due North, 40 m due East and 20 m due South to reach a field. The distance he hasto walk to reach the field and the magnitude of displacement from his house to the field respectively area) 90 m, 75 mb) 110 m, 50 mc) 50 m, 110 m d) 75 m, 110 m ​

11) Find the currents and voltage actors such rexistros fautenetwork, shown in fig wringfig using loop analysis methodhtIDVਹੈ Shor​

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G=gm/r squareg=gm/r square

A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation.(With step by step) I'll mark as brainliest​​

In a circular motion of a particle the tangential acceleration of the particle is given by aj = 2t m/s2Where't' is the time, the radius of the circle described is 4m. The particle is initially a rest. Timeafter which total acceleration of the particle makes 450 with radial acceleration is:​

Consider three charges are placed apart with some distancewhat will be the net force experienced in q1 due to q2, q3?​

Iii) 300 mmol of perfect gas occupies 13 dm3at 320 K. Calculate the work done in jouleswhen the gas expands :a) Isothermally against a constant externalpressure of 0.20 bar,b) Isothermal and reversible process,c) Into vacuum until the volume of gas isincreased by 3 dm'. (R = 8.314 J moleK-)​

A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation.(With step by step) I'll mark as brainliest​

5.An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s–2?

From a sphere of radius 1 m, a sphere of radius0.5 m is removed from the edge. The shift inthe C.M. is1) 13/16 m2) 16/13m3) 14/13 m4) 1/14 m

EXERCISES1configuration.theratio ofJustify the position of hydrogen in the periodic table on the basis of its electronie

AH = a.A>P12. AH = bAH = d.AH = CAHEB.On the basis of Hess's law of constant heat summation, choose the correct relation:(1) b = a -d + c(2) c = a - b + d(3) d = a + b + c(4) a - c = b + d

Draw the diagram showing the experimental arrangements to verify the speed of diffusion of two gasses

What causes potential difference in household electricity ?Which are the devices used in circuit connected of household electricity ?

Hey guys!The answer for this question is given option 4: none of the above...can anyone elaborate how??

An object is placed in front of a convex mirror of focal length 15 em. Itproduces an image that is half the size of the object. Find (a) position ofthe object, (b) nature of the image, and (c) draw the ray diagram of imageformation

Velocity time graph of the manif a perrticle is a straight the asShotun in fistere Draw comeffantinggraph between acceleration and time.stIMNCimmis)2+1t (in second

Velocity time graph of the motionof a particle is a straight line asShotan in fisture. Draw comesportinggraph between acceleration and time.Cimmis)21t (in second)

1. when we enter a dim light room from a bright light, we're not able to see the object for sometime. explain why2. why do we have two eyes Instead of one

A car covers 75 km of its journey at60 km/hr, the next 45 km at a speed of 30km/hr and the remaining part of the journey in 2 firs and 15 min. If the aver-age speed for the journey was 45 km/hr, how muchdistance was covered in the last part of the journey?a) 100 km c) 80 kmb) 90 km d] 180 km

Leurs, dra meteorites.Distillyu6.MEMWhat are 'Phases of the Moon'? Draw a rough diagram of any two phases and name them.List five uses of artificial satellites.

Calculate the equivalent resistance of 30 ohm,20 ohm and 60 ohm:a)when connected in seriesb) when connected in parallel.

FoFig. 3.339. Write the expression for the moment of forceabout a given axis of rotation.

If a charge of 420 C flows througha conducting wire in 5 minuteswhat is the value of the current?(Answer : 1.4 A)

A person moves points from AtoB 8 kg and he change direction mmoves 6kg B to C find displacement

1 point10. How do we calculateNumber of teams in upperhalf? हम ऊपरी अर्ध में टीमों कीसंख्या की गणना कैसे करते हैं?ON-1ON+1ON+1/2ON-1/2O O

Three resistance of value 12 ohm,3ohm and 15ohm are connected in series across 20v ,D.C supply calculateda. equivalent resistance of the circuitb. the total current of the circuitc.the voltage drop across each resistor.

A) Determine the electrostatic potentialenergy of a system consisting of twocharge Tud s-2pc repectively.b) how much work is required to seperate two charges infinitly away from each other?

A. Consider the 3 circuit shown in figureanalysis each circuit & demonstrate thatVx= vx ' and vx ''b. Consider the 3 ckt & draw thevenin and Nortonequivalent ckt While RL=3kohm.c. Consider the 3 circuit find power delivered to 3 kohm.

7. The position of a particle w...ttimet along x-axis is given by x = 91?-t' where x is in metre and t insecond. Find(a) Maximum speed along +x direction(b) Position of turning point(c) Displacement in first ten seconds(d) Distance travelled in first ten seconds

Page1) Find the currents and voltageacross Each resistor for thenetwork, shown in fig using loop analysis method

Two vehicles start from the same point with velocity 10kmph and 30kmph along two roads. If angle between the tracks is 60 degree, determine the distance between the vehicles after 12 minutes.a)40 kmb)8 kmc)4 kmd)2×root 7

1(3i+4j-5kV50If Ã = B - C, then determine the angle betweenand B.Hint :Č= B - Å, č. Č= (B - Ả• (B - ÅA? + B2 - 02Ans. 0 = cos2 AB-1If Ã = 3î + 2ị and B =î -2į + 3 k, then find thmagnitudes of A + B and A - B. Ans. 5, 129Thesum andand difference of two

A man has to go 50 m due North, 40 m due East and 20 m due South to reach a field. The distance he hasto walk to reach the field and the magnitude of displacement from his house to the field respectively area) 90 m, 75 mb) 110 m, 50 mc) 50 m, 110 m d) 75 m, 110 m

11) Find the currents and voltage actors such rexistros fautenetwork, shown in fig wringfig using loop analysis methodhtIDVਹੈ Shor

A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation.(With step by step) I'll mark as brainliest

In a circular motion of a particle the tangential acceleration of the particle is given by aj = 2t m/s2Where't' is the time, the radius of the circle described is 4m. The particle is initially a rest. Timeafter which total acceleration of the particle makes 450 with radial acceleration is:

Consider three charges are placed apart with some distancewhat will be the net force experienced in q1 due to q2, q3?

Iii) 300 mmol of perfect gas occupies 13 dm3at 320 K. Calculate the work done in jouleswhen the gas expands :a) Isothermally against a constant externalpressure of 0.20 bar,b) Isothermal and reversible process,c) Into vacuum until the volume of gas isincreased by 3 dm'. (R = 8.314 J moleK-)

A radio station broadcast on a frequency of 980 kHz. Calculate the wavelength of the electromagnetic radiation.(With step by step) I'll mark as brainliest