67486 + Interview Questions in Secondary School in Physics

1.	3. The distance from planet Earth to Sun is 1.5 x 108 km. Find the distance in megameter(Mm)?4. A bag of cement has a mass of 50 kg. Convert the unit to gram(g)?5. A wooden block has a mass of 380 g. Convert the unit to kilogram(kg)?6. The mass of a lorry is 2 tons. Determine its mass in gram(g)?
Answer» Answer: 3 DONT know 4) 50000g 5)0.38 kg 6) 2000000g

1.

3. The distance from planet Earth to Sun is 1.5 x 108 km. Find the distance in megameter(Mm)?4. A bag of cement has a mass of 50 kg. Convert the unit to gram(g)?5. A wooden block has a mass of 380 g. Convert the unit to kilogram(kg)?6. The mass of a lorry is 2 tons. Determine its mass in gram(g)?

Answer»

Answer:

3 DONT know

4) 50000g

5)0.38 kg

6) 2000000g

Discussion

2.	the velocity of retarding body change from 90 kilometre per hour to 36 km per hour find change in velocity in m per s
Answer» EXPLANATION: here is YOURANSWER if you WANT to KNOW more about it or SOLVE it with then you

2.

the velocity of retarding body change from 90 kilometre per hour to 36 km per hour find change in velocity in m per s

Answer»

EXPLANATION:

here is YOURANSWER if you WANT to KNOW more about it or SOLVE it with then you

Discussion

3.	A baseball is popped straight up into the air and has a hang-time of 6.25s. Determine the height to which the ball rises before it reaches its peak.(Hint : the time to rise to the peak is one half the total hang time )
Answer» 48 Meters Given: Acceleration = - 9.8 meter / sec^2 Final Velocity = 0 m/sec t = 3.13 SECONDS To Find: d = ? Solving: FIRST USING: Final Velocity = Initial Velocity + acceleration * time Now substituting the values in the formula: 0 meter/sec = VI + (-9.8 meter/ second^2) * (3.13 seconds) 0 m/sec = Vi - 30.674 m/sec Vi = 30.674 m/sec Rounding we get = 30.7 m/sec Now using the formula: vf^2 = vi^2 + 2ad Substituting the values in this formula: (0 m/sec)^2 = (30.7 m/sec)^2 + 2(-9.8 m/s^2)(d) 0 m^2/sec^2 = (940 m^2/sec^2) + (-19.6 m/sec^2)(d) -940 m^2/s^2 = (-19.6 m/s^2) d d = (-940 m^2/sec^2)/(-19.6 m/sec^2) d = 48.0 meters Therefore, the distance traveled is 48 meters.

3.

A baseball is popped straight up into the air and has a hang-time of 6.25s. Determine the height to which the ball rises before it reaches its peak.(Hint : the time to rise to the peak is one half the total hang time )

Answer»

48 Meters

Given:

Acceleration = - 9.8 meter / sec^2

Final Velocity = 0 m/sec

t = 3.13 SECONDS

To Find:

d = ?

Solving:

FIRST USING:

Final Velocity = Initial Velocity + acceleration * time

Now substituting the values in the formula:

0 meter/sec = VI + (-9.8 meter/ second^2) * (3.13 seconds)

0 m/sec = Vi - 30.674 m/sec

Vi = 30.674 m/sec

Rounding we get = 30.7 m/sec

Now using the formula:

vf^2 = vi^2 + 2*a*d

Substituting the values in this formula:

(0 m/sec)^2 = (30.7 m/sec)^2 + 2*(-9.8 m/s^2)*(d)

0 m^2/sec^2 = (940 m^2/sec^2) + (-19.6 m/sec^2)*(d)

-940 m^2/s^2 = (-19.6 m/s^2) * d

d = (-940 m^2/sec^2)/(-19.6 m/sec^2)

d = 48.0 meters

Therefore, the distance traveled is 48 meters.

Discussion

4.	bus starting from rest moves with a uniform acceleration of 0.1 metre per second square for 2 minutes find the speed find the distance travelled
Answer» ANSWER: answer:- A:-12m/s B:-720m Explanation: a=0.2m/s² t=120s(2MIN) u=0m(as it STARTS from REST) v=u+at v=0+at=at V=0.1120=12m/s(a) v²-u²=2as 144=20.1*s 72/0.1=s ∴s=720m(b)

4.

bus starting from rest moves with a uniform acceleration of 0.1 metre per second square for 2 minutes find the speed find the distance travelled

Answer»

ANSWER:

answer:-

A:-12m/s

B:-720m

Explanation:

a=0.2m/s²

t=120s(2MIN)

u=0m(as it STARTS from REST)

v=u+at

v=0+at=at

V=0.1*120=12m/s(a)

v²-u²=2as

144=2*0.1*s

72/0.1=s

∴s=720m(b)

Discussion

5.	Give an example of Newton's 2nd law of motion?
Answer» $\huge \mathfrak \green{answer}$ _______________________ According to NEWTON’s second law of motion, the net force experienced by a body is directly proportional to the RATE of change of momentum of the body. If you use the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass.  It is easier to push an EMPTY shopping cart than a full ONE, because the full shopping cart has more mass than the empty one. ___________________________ $\huge \mathscr\red{Be \:\:Brainly}$

5.

Give an example of Newton's 2nd law of motion?

Answer»

$\huge \mathfrak \green{answer}$

_______________________

According to NEWTON’s second law of motion, the net force experienced by a body is directly proportional to the RATE of change of momentum of the body.

If you use the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass.  It is easier to push an EMPTY shopping cart than a full ONE, because the full shopping cart has more mass than the empty one.

___________________________

$\huge \mathscr\red{Be \:\:Brainly}$

Discussion

6.	Is pulling a heavy box is difficult or pushing it. where do we have more friction.
Answer» Answer: pulling a HEAVY box has more FRICTION than PUSHING it. PLEASE MARK it as brainliest

6.

Is pulling a heavy box is difficult or pushing it. where do we have more friction.

Answer»

Answer:

pulling a HEAVY box has more FRICTION than PUSHING it.

PLEASE MARK it as brainliest

Discussion

7.	A telephone tower with a height of500 m and it's ton elevated with anangle of 45° with respect to an obserwerCalculate the distance of the obserwerfrom the tower.
Answer» Answer: answer is 500m Explanation: first draw FIGURE for better understanding. tan 45=oppo/adj=500/X(here x is distance of OBSERVER from tower) 1=500/x x=500m

7.

A telephone tower with a height of500 m and it's ton elevated with anangle of 45° with respect to an obserwerCalculate the distance of the obserwerfrom the tower.

Answer»

Answer:

answer is 500m

Explanation:

first draw FIGURE for better understanding.

tan 45=oppo/adj=500/X(here x is distance of OBSERVER from tower)

1=500/x

x=500m

Discussion

8.	What are the differences between liquids solids and gases?
Answer» Answer:GASES, liquids and solids are all made up of atoms, molecules, and/or IONS, but the behaviors of these particles differ in the three PHASES. ... gas are well separated with no regular arrangement. liquid are CLOSE together with no regular arrangement. solid are tightly packed, usually in a regular pattern. Hope it helps! EXPLANATION:

8.

What are the differences between liquids solids and gases?

Answer»

Answer:GASES, liquids and solids are all made up of atoms, molecules, and/or IONS, but the behaviors of these particles differ in the three PHASES. ... gas are well separated with no regular arrangement. liquid are CLOSE together with no regular arrangement. solid are tightly packed, usually in a regular pattern.

Hope it helps!

EXPLANATION:

Discussion

9.	6.In how much time will a van produce an acceleration of 2 m/s² if it starts from rest and reaches a speed of 6 m/s
Answer» Given, a = 2 m/s^2; v = 6 m/s; U = 0 m/s; t = ? Thus, v = u + at or, 6 m/s = 2 m/s^2 × t or, t = 3 s HOPE THIS COULD HELP!!!

9.

6.In how much time will a van produce an acceleration of 2 m/s² if it starts from rest and reaches a speed of 6 m/s

Answer»

Given, a = 2 m/s^2; v = 6 m/s; U = 0 m/s; t = ?

Thus, v = u + at

or, 6 m/s = 2 m/s^2 × t

or, t = 3 s

HOPE THIS COULD HELP!!!

Discussion

10.	A car moving in hills is which type of motion
Answer» ⭐⭐Kinetic Motion⭐⭐ $\huge \mathtt \purple{thank \: you}$ ♥️.HOPE IT HELPS.♥️

10.

A car moving in hills is which type of motion

Answer»

⭐⭐Kinetic Motion⭐⭐

$\huge \mathtt \purple{thank \: you}$

♥️.HOPE IT HELPS.♥️

Discussion

11.	Why is only a tip of iceberg visible outside the surface of the sea water
Answer» $\huge \mathfrak \pink {answer}$ _________________________ This is why ICE cubes float in water. Second, Most ICEBERGS actually CONTAIN a lot of air. ... THIRD, icebergs are made from fresh water . Because of the dissolved SALTS in ocean water, it is denser than freshwater, adding bouyancy to the icebergs ________________________ $\huge \mathscr\red {Be \:Brainly}$

11.

Why is only a tip of iceberg visible outside the surface of the sea water

Answer»

$\huge \mathfrak \pink {answer}$

_________________________

This is why ICE cubes float in water. Second, Most ICEBERGS actually CONTAIN a lot of air. ... THIRD, icebergs are made from fresh water . Because of the dissolved SALTS in ocean water, it is denser than freshwater, adding bouyancy to the icebergs

________________________

$\huge \mathscr\red {Be \:Brainly}$

Discussion

12.	scooter travelling at 10 metre per second speed upto 20 metre per second in 4 second find the acceleration of scooter
Answer» ▪Initial velocity=10m/sec ▪final velocity =20m/sec ▪total time TAKEN =4 SECONDS ▪Acceleration======> change in velocity /total time taken =v2-v1/t =20 - 10/4 =10/4 =2.5 m/sec^2 PLEASE MARK IT AS BRAINLIST .

12.

scooter travelling at 10 metre per second speed upto 20 metre per second in 4 second find the acceleration of scooter

Answer»

▪Initial velocity=10m/sec

▪final velocity =20m/sec

▪total time TAKEN =4 SECONDS

▪Acceleration======>

change in velocity /total time taken

=v2-v1/t

=20 - 10/4

=10/4

=2.5 m/sec^2

PLEASE MARK IT AS BRAINLIST .

Discussion

13.	Name A device which prevents loss gain of heat by any mode of heat transfer
Answer» Explanation: thermos BOTTLE is a device which PREVENTS loss gain of heat by any mode of heat TRANSFER

13.

Name A device which prevents loss gain of heat by any mode of heat transfer

Answer»

Explanation:

thermos BOTTLE is a device which PREVENTS loss gain of heat by any mode of heat TRANSFER

Discussion

14.	(ii) pqx2 - (p+ q?) x + pq = 0
Answer» ANSWER: what we have to FIND in this QUESTION BUDDY?

14.

(ii) pqx2 - (p+ q?) x + pq = 0

Answer»

ANSWER:

what we have to FIND in this QUESTION BUDDY?

Discussion

15.	What is the reason behind charging of object
Answer» ANSWER: ELECTROSTATIC FORCE of ELECTRONS is the CAUSE

15.

What is the reason behind charging of object

Answer»

ANSWER:

ELECTROSTATIC FORCE of ELECTRONS is the CAUSE

Discussion

16.	What is the speed of light in air
Answer» The SPEED of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory NOTHING can travel faster than light. In miles per HOUR, light speed is, well, a LOT: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.

16.

What is the speed of light in air

Answer»

The SPEED of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory NOTHING can travel faster than light. In miles per HOUR, light speed is, well, a LOT: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.

Discussion

17.	Answer the numerical on conversion of systems of units:1. The distance of Kota Bharu city to Kuala lumpur city is 474 km. Find the distancein the units of meter and centimeter.
Answer» The DISTANCE = 474km We know, 1km = 1000m so, 474km = 474000m Now, we know, 1m = 100cm so, 474000m = 47400000cm Cheers!

17.

Answer the numerical on conversion of systems of units:1. The distance of Kota Bharu city to Kuala lumpur city is 474 km. Find the distancein the units of meter and centimeter.

Answer»

The DISTANCE = 474km

We know,

1km = 1000m

so,

474km = 474000m

Now,

we know,

1m = 100cm

so,

474000m = 47400000cm

Cheers!

Discussion

18.	Define the term Polarization. Write its relation with external applied field for linear isotropic dielectrics.
Answer» EXPLANATION: the action of RESTRICTING the VIBRATIONS of a transverse wave, especially light, WHOLLY or partially to ONE direction.

18.

Define the term Polarization. Write its relation with external applied field for linear isotropic dielectrics.

Answer»

EXPLANATION:

the action of RESTRICTING the VIBRATIONS of a transverse wave, especially light, WHOLLY or partially to ONE direction.

Discussion

19.	A scooter is moving at 10 m/s speed up to 20m/s in 4sec . find acceleration
Answer» U = 10m/s v = 20m/s t = 4 s a = v-u/t a = 20-10/4 a = 10/4 a = 2.5m/s² Cheers!

19.

A scooter is moving at 10 m/s speed up to 20m/s in 4sec . find acceleration

Answer»

U = 10m/s

v = 20m/s

t = 4 s

a = v-u/t

a = 20-10/4

a = 10/4

a = 2.5m/s²

Cheers!

Discussion

20.	Mention any two properties in which colloids after form suspension
Answer» ANSWER: i) CHANGE in chemical PROPERTIES. Change in MOLECULAR formula.

20.

Mention any two properties in which colloids after form suspension

Answer»

ANSWER:

i) CHANGE in chemical PROPERTIES.

Change in MOLECULAR formula.

Discussion

21.	How the temperature of cities is measured with which tool
Answer» ANSWER: DEWPOINT MEASUREMENT PRODUCTS

21.

How the temperature of cities is measured with which tool

Answer»

ANSWER:

DEWPOINT MEASUREMENT PRODUCTS

Discussion

22.	Derive the equation of motion by mathematical and graphical method?
Answer» ANSWER: it is EQIATION of MOTION calliscally

22.

Derive the equation of motion by mathematical and graphical method?

Answer»

ANSWER:

it is EQIATION of MOTION calliscally

Discussion

23.	How a phone is made
Answer» ANSWER: by ASSEMBLING DIFFERENT PARTS TOGETHER

23.

How a phone is made

Answer»

ANSWER:

by ASSEMBLING DIFFERENT PARTS TOGETHER

Discussion

24.	A wire of 10 m long, 0.2 mm in diameter and has a resistance of 10 ohm. Calculate the resistivity of this material.
Answer» ANSWER: Ra/l=ρ =10(πr²)/10 =πr²=3.14210⁻⁴=6.2810⁸Ωm Explanation:HOPE it HELPS/////*

24.

A wire of 10 m long, 0.2 mm in diameter and has a resistance of 10 ohm. Calculate the resistivity of this material.

Answer»

ANSWER:

Ra/l=ρ

=10(πr²)/10

=πr²=3.14*2*10⁻⁴=6.28*10⁸Ωm

Explanation:HOPE it HELPS/////

Discussion

25.	ClassmateDatePagegneticarefieldat the Centure due
Answer» CONTACT © CLASSMATE INDIA

Discussion

26.	What is force? explain
Answer» Hello! Force • Force can be defined as PULL or PUSH • The strength used to MOVE an OBJECT through a DISTANCE is CALLED as force

26.

What is force? explain

Answer»

Hello!

Force

• Force can be defined as PULL or PUSH

• The strength used to MOVE an OBJECT through a DISTANCE is CALLED as force

Discussion

27.	A=0, v=5m/s, u=?, t=2second.
Answer» ANSWER: by putting this formula V = u + at 5 = u + 0×2 u = 5 hope this is HELPFUL for u

27.

A=0, v=5m/s, u=?, t=2second.

Answer»

ANSWER:

by putting this formula

V = u + at

5 = u + 0×2

u = 5

hope this is HELPFUL for u

Discussion

28.	A convex lens forms a real and inverted image of an object at a distance of 40 cm from it . What will be the distance of an object if size of an image is same as the object ? Determine the power of lens .
Answer» Answer: O Explanation: Convex LENS made REAL Inverted image the SIZE of picture is according to the size of OBJECT

28.

A convex lens forms a real and inverted image of an object at a distance of 40 cm from it . What will be the distance of an object if size of an image is same as the object ? Determine the power of lens .

Answer»

Answer:

O

Explanation:

Convex LENS made REAL Inverted image the SIZE of picture is according to the size of OBJECT

Discussion

29.	What is an element and an compound
Answer» Explanation: A COMPOUND contains atoms of different elements chemically combined together in a fixed ratio. An element is a PURE chemical SUBSTANCE MADE of same type of atom. ...

29.

What is an element and an compound

Answer»

Explanation:

A COMPOUND contains atoms of different elements chemically combined together in a fixed ratio. An element is a PURE chemical SUBSTANCE MADE of same type of atom. ...

Discussion

30.	What do you mean by convex lens
Answer» Answer: a lens which is THIN at edges and THICK at center. it has positive FOCAL length. it is USED in farsightedness

30.

What do you mean by convex lens

Answer»

Answer:

a lens which is THIN at edges and THICK at center.

it has positive FOCAL length.

it is USED in farsightedness

Discussion

31.	Total force for the force acting in opposite direction
Answer» The net force is the total amount of force ACTED on an OBJECT. It BECOMES 0 when the forces are equal, cancelling each other out (or BALANCING them - same thing).

Discussion

32.	A train takes 4 h to cover a distance of 165 km. On the return trip, it takes 4 h 20 mins to cover thsame distance. What is the average speed of the train?(A) 25.9 kmph (B) 29.8 kmph (C) 36.9 kmph (D) 39.3 kmph
Answer» ANSWER: C IS THE CORRECT ABOUT THE PROBLEM

32.

A train takes 4 h to cover a distance of 165 km. On the return trip, it takes 4 h 20 mins to cover thsame distance. What is the average speed of the train?(A) 25.9 kmph (B) 29.8 kmph (C) 36.9 kmph (D) 39.3 kmph

Answer»

ANSWER:

C IS THE CORRECT ABOUT THE PROBLEM

Discussion

33.	Verify the Newton's laws of motion with examples
Answer» HEY MATE.... HERE IS YOUR ANSWER... NEWTON'S FIRST LAW OF MOTION... AN OBJECT CONTINOUS TO BE IN A STATE OF REST OR OF UNIFORM MOTION ALONG A STRAIGHT LINE UNLESS ACTED UPON BY AN UNBALANCED FORCE. EX... A COIN IS PLACED ON TABLE. IT IS IN REST BUT WHEN WE KICK IT BY HAND THEN IT CHANGES ITS POSITION. HERE KICKING BY HAND IS EXTERNAL FORCE. NEWTON'S SECOND LAW OF MOTION..... THE RATE OF CHANGE OF MOMENTUM OF AN OBJECT IS DIRECTLY PROPORTIONAL TO THE APPLIED UNBALANCED FORCE . EX.. DURING THE GAME TABLE TENNIS IF THE BALL HITS A PLAYER IT DOESN'T HURT HIM. BECAUSE FORCE IS LOW SO MOMENTUM IS ALSO LOW. NEWTON'S THIRD LAW OF MOTION... TO EVERY ACTION THERE IS A OPPOSITE OR EQUAL REACTION. EX.. WHEN A GUN IS FIRED IT EXERTS A FORWARD FORCE IN THE BULLET. THE BULLET EXERTS AN EQUAL AND OPPOSITE FORCE ON THE GUN . HOPE YOU STISFIED WITH MY ANSWER PLS MARK AS BRAINLIEST.... THANK YOU FOR ASKING QUESTIONS........

Discussion

34.	7. We wish to obtain an erect image of an object, using a concave mirror of focallength 15 cm. What should be the range of distance of the object from the mirror?What is the nature of the image? Is the image larger or smaller than the object?Draw a ray diagram to show the image formation in this case.
Answer» ANSWER:the object MUST be kept at a distance less than 15 cm from the mirror to obtain a erect IMAGE The image FORMED is erect , virtual , and larger than the object Explanation:

34.

7. We wish to obtain an erect image of an object, using a concave mirror of focallength 15 cm. What should be the range of distance of the object from the mirror?What is the nature of the image? Is the image larger or smaller than the object?Draw a ray diagram to show the image formation in this case.

Answer»

ANSWER:the object MUST be kept at a distance less than 15 cm from the mirror to obtain a erect IMAGE

The image FORMED is erect , virtual , and larger than the object

Explanation:

Discussion

35.	A body moving with a velocity of 40 ms -1 is brought to rest in 5 sec. The retardation is
Answer» Answer: 8ms-2 is the RETARDATION for the OBJECT

35.

A body moving with a velocity of 40 ms -1 is brought to rest in 5 sec. The retardation is

Answer»

Answer:

8ms-2 is the RETARDATION for the OBJECT

Discussion

36.	Pls give it's interpretation!!!! :-(
Answer» ANSWER: Explanation: At t=os a ball is THROWN above the EARTH so that speed decreasing due to effect of gravity after reaching its maximum height it started FALLING so speed is increasing due towards gravity.

36.

Pls give it's interpretation!!!! :-(

Answer»

ANSWER:

Explanation:

At t=os a ball is THROWN above the EARTH so that speed decreasing due to effect of gravity after reaching its maximum height it started FALLING so speed is increasing due towards gravity.

Discussion

37.	A bus can accelerate with an acceleration 1 m/s find the minimum time for bus to reach the speed of 100km/s from 50km /s
Answer» Answer: 2km-1 Explanation: 100 DIVIDED by 50

37.

A bus can accelerate with an acceleration 1 m/s find the minimum time for bus to reach the speed of 100km/s from 50km /s

Answer»

Answer:

2km-1

Explanation:

100 DIVIDED by 50

Discussion

38.	3.The motion of a body is given by the equationdv/dt = 3 – 2v, where v is velocity in m/s and tin second. The acceleration of particle whenits velocity is 1 m/s, will be(1) 1 m/s2(2) -1 m/s2(3) 3 m/s2(4) -2 m/s2
Answer» ANSWER: Answer is (4)-2m/sec^2

38.

3.The motion of a body is given by the equationdv/dt = 3 – 2v, where v is velocity in m/s and tin second. The acceleration of particle whenits velocity is 1 m/s, will be(1) 1 m/s2(2) -1 m/s2(3) 3 m/s2(4) -2 m/s2

Answer»

ANSWER:

Answer is (4)-2m/sec^2

Discussion

39.	an object is kept at a distance of 5 cm in front of convex mirror of focal length 10 cm calculate the position and nature of the image formed
Answer» Explanation: U = - 5 v = ? f = 10 use the formula 1/v +1/u = 1/f magnification = -v/u Image FORMED is VIRTUAL

39.

an object is kept at a distance of 5 cm in front of convex mirror of focal length 10 cm calculate the position and nature of the image formed

Answer»

Explanation:

U = - 5

v = ?

f = 10

use the formula 1/v +1/u = 1/f

magnification = -v/u

Image FORMED is VIRTUAL

Discussion

40.	What will happened if elctric gargets are not in the world? (ten sentence )
Answer» ANSWER: then LIFE WOULD not be POSSIBLE

40.

What will happened if elctric gargets are not in the world? (ten sentence )

Answer»

ANSWER:

then LIFE WOULD not be POSSIBLE

Discussion

41.	Why are electric field lines perpendicular at a point on an equipotential surface of an conductor
Answer» ANSWER: for any TWO points a and b in EQUIPOTENTIAL surface

41.

Why are electric field lines perpendicular at a point on an equipotential surface of an conductor

Answer»

ANSWER:

for any TWO points a and b in EQUIPOTENTIAL surface

Discussion

42.	Draw electric field lines between parallel plates of capacitor with dielectric as a medium
Answer» Dielectric polarization takes place due to the formation of a dipole MOMENT in an insulation material because of an electric field that is applied externally. POSITIVE and negative CHARGES MOVE towards and away from the DIRECTION of the field. ihope it helps u :) ♡

42.

Draw electric field lines between parallel plates of capacitor with dielectric as a medium

Answer»

Dielectric polarization takes place due to the formation of a dipole MOMENT in an insulation material because of an electric field that is applied externally. POSITIVE and negative CHARGES MOVE towards and away from the DIRECTION of the field.

ihope it helps u :) ♡

Discussion

43.	What is a induced current
Answer» $\mathfrak{\large{\underline{\underline{Answer:-}}}}$ $\huge\text{\underline{<klux>INDUCED</klux> Current}}$ The electric current PRODUCED during the electromagnetic induction is KNOWN as induced current. Electromagnetic induction :- The phenomenon of PRODUCING an induced current by changing the magnetic flux around the COIL is known as electromagnetic induction. The induced current is produced by changing the magnetic flux around the coil.

43.

What is a induced current

Answer»

$\mathfrak{\large{\underline{\underline{Answer:-}}}}$

$\huge\text{\underline{<klux>INDUCED</klux> Current}}$

The electric current PRODUCED during the electromagnetic induction is KNOWN as induced current.

Electromagnetic induction :- The phenomenon of PRODUCING an induced current by changing the magnetic flux around the COIL is known as electromagnetic induction.

The induced current is produced by changing the magnetic flux around the coil.

Discussion

44.	Name a method used to separate cream from milk
Answer» Answer: CENTRIFUGATION is the method to SEPARATE cream from milk as a CENTRIFUGAL force is APPLIED to separate them.

44.

Name a method used to separate cream from milk

Answer»

Answer:

CENTRIFUGATION is the method to SEPARATE cream from milk as a CENTRIFUGAL force is APPLIED to separate them.

Discussion

45.	Which is your farvorite subject?
Answer» ANSWER: HII my FAVORITE SUBJECT is MATHEMATICS

45.

Which is your farvorite subject?

Answer»

ANSWER:

HII my FAVORITE SUBJECT is MATHEMATICS

Discussion

46.	When a pen is kept on a book and the starts moving from one right hand to left .Is the pen at rest or motion
Answer» ANS It is in MOTION.

Discussion

47.	What is the significance of newton first law of motion?
Answer» Explanation: Newton has given three LAWS of motion. According to the FIRST LAW of motion an object at rest will remain at rest and object in motion will remain in motion untill and unless an unbalanced FORCE is acting on it. This law is also known as law of inertia. Inertia is the measure of the mass of an object. First law also shows the force acting on an object when it is MOVING or it is at rest. Hence, this is the required solution.

47.

What is the significance of newton first law of motion?

Answer»

Explanation:

Newton has given three LAWS of motion. According to the FIRST LAW of motion an object at rest will remain at rest and object in motion will remain in motion untill and unless an unbalanced FORCE is acting on it. This law is also known as law of inertia. Inertia is the measure of the mass of an object.

First law also shows the force acting on an object when it is MOVING or it is at rest. Hence, this is the required solution.

Discussion

48.	Moon is made of ????
Answer» MOON is LARGELY MADE up of LUNAR ROCK

48.

Moon is made of ????

Answer»

MOON is LARGELY MADE up of LUNAR ROCK

Discussion

49.	a rectangular track is 40m long and 30m broad. a man starts walking from one corner of the track and reaches the opposite corner . find the distance traveled and the magnitude of the displacement.
Answer» $\mathfrak{\large{\underline{\underline{Given:-}}}}$ LENGTH of rectangular track = 40 m Breadth of rectangular track = 30 m $\mathfrak{\large{\underline{\underline{To find :-}}}}$ Distance travelled by man = ? Displacement by man = ? $\mathfrak{\large{\underline{\underline{Solution:-}}}}$ Since, man is started from ONE corner and reaches the opposite corner . Let ABCD be the rectangle given in attachment. AB = DC = 40 m AD = BC = 30 m Let the man start from corner d and move to corner B. Then distance travelled by man = AD + AB = 30 + 40 = 70 m. Displacement of man is given by DIAGONAL of rectangle. Displacement of man = $\bold{DB = \sqrt{ {(DA) }^{2} + {(AB) }^{2} } }$ $\implies$ $\bold{DB= \sqrt{ {30}^{2} + {40}^{2} } }$ $\implies$ $\bold{DB = \sqrt{2500} }$ $\implies$ $\bold{DB = 50 m}$ hence, displacement of man is 50m.

49.

a rectangular track is 40m long and 30m broad. a man starts walking from one corner of the track and reaches the opposite corner . find the distance traveled and the magnitude of the displacement.

Answer»

$\mathfrak{\large{\underline{\underline{Given:-}}}}$

LENGTH of rectangular track = 40 m

Breadth of rectangular track = 30 m

$\mathfrak{\large{\underline{\underline{To find :-}}}}$

Distance travelled by man = ?

Displacement by man = ?

$\mathfrak{\large{\underline{\underline{Solution:-}}}}$

Since, man is started from ONE corner and reaches the opposite corner .

Let ABCD be the rectangle given in attachment.

AB = DC = 40 m

AD = BC = 30 m

Let the man start from corner d and move to corner B.

Then distance travelled by man = AD + AB

= 30 + 40

= 70 m.

Displacement of man is given by DIAGONAL of rectangle.

Displacement of man = $\bold{DB = \sqrt{ {(DA) }^{2} + {(AB) }^{2} } }$

$\implies$ $\bold{DB= \sqrt{ {30}^{2} + {40}^{2} } }$

$\implies$ $\bold{DB = \sqrt{2500} }$

$\implies$ $\bold{DB = 50 m}$

hence, displacement of man is 50m.

Discussion

50.	Please answer this question......physics class 9. ch1. motion....numerical
Answer» ANSWER:what answer do you need Explanation:

50.

Please answer this question......physics class 9. ch1. motion....numerical

Answer»

ANSWER:what answer do you need

Explanation:

Discussion

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