67486 + Interview Questions in Secondary School in Physics

1.	Which is more stable - theory or law?
Answer» ANSWER: I THINK theory Explanation: it is SIMPLE I think

1.

Which is more stable - theory or law?

Answer»

I THINK theory

Explanation:

it is SIMPLE I think

2.	If a particle moving in a circular path of radius 5 m and a velocity is expressed as v = 412 m/s, the tangential component of acceleration at t=1s is --- m/s2.
Answer» circular MOTION is a MOVEMENT of an object along the circumference of a circle or ROTATION along a circular path. It can be uniform, with constant angular rate of rotation and constant SPEED, or non-uniform with a CHANGING rate of rotation.

Discussion

3.	4. The force required to change the velocity of an object of mass 5 kg from 6m/s to 8 m/s in 2 sec is:a) 5 N b) 7 Newtonc) 8 newton d) 5 Newtoncorrect answer will get brainiest answer
Answer» Answer: (D) 5 N Explanation: $\underline{\bigstar\:\textsf{Given:}}$ Mass (m) = 5 kg Initial velocity (u) = 6 m/s Final velocity (v) = 8 m/s Time (t) = 2 s $\underline{\bigstar\:\textsf{To\:find:}}$ FORCE (F) = ? $\underline{\bigstar\:\textsf{Solution:}}$ We remember that $\blue{\sf{Force(F)\:=\:mass(m)\:×\:acceleration(a)}}$ We also remember that $\green{\sf{Acceleration(a)\:=\:\dfrac{v\:-\:u}{t}}}$ Let's first find the acceleration ! $\longrightarrow\:\sf{a\:=\:\dfrac{8\:-\:6}{2}}$ $\longrightarrow\:\sf{a\:=\:\dfrac{2}{2}}$ ${\sf{\underline{\underline{\therefore \:Acceleration\:=\:1\:m/s^2}}}}$ Now, find the force required. $\implies$ F = ma $\implies$ F = 5 × 1 $\implies$ F = 5 N ${\large{\boxed{\sf{\therefore \:(D)\:5\:Newton✔}}}}$ HOPE it helped you dear...

3.

4. The force required to change the velocity of an object of mass 5 kg from 6m/s to 8 m/s in 2 sec is:a) 5 N b) 7 Newtonc) 8 newton d) 5 Newtoncorrect answer will get brainiest answer

Answer»

Answer:

(D) 5 N

Explanation:

$\underline{\bigstar\:\textsf{Given:}}$

Mass (m) = 5 kg
Initial velocity (u) = 6 m/s
Final velocity (v) = 8 m/s
Time (t) = 2 s

$\underline{\bigstar\:\textsf{To\:find:}}$

FORCE (F) = ?

$\underline{\bigstar\:\textsf{Solution:}}$

We remember that $\blue{\sf{Force(F)\:=\:mass(m)\:×\:acceleration(a)}}$

We also remember that $\green{\sf{Acceleration(a)\:=\:\dfrac{v\:-\:u}{t}}}$

Let's first find the acceleration !

$\longrightarrow\:\sf{a\:=\:\dfrac{8\:-\:6}{2}}$

$\longrightarrow\:\sf{a\:=\:\dfrac{2}{2}}$

${\sf{\underline{\underline{\therefore \:Acceleration\:=\:1\:m/s^2}}}}$

Now, find the force required.

$\implies$ F = ma

$\implies$ F = 5 × 1

$\implies$ F = 5 N

${\large{\boxed{\sf{\therefore \:(D)\:5\:Newton✔}}}}$

HOPE it helped you dear...

Discussion

4.	jab insaan pani mai ghir jaata h to dhoob jata h par jab marjata h to pani mai float kese krta h..????
Answer» EXPLANATION: skeksksnsksksjskksksksksksksje

4.

jab insaan pani mai ghir jaata h to dhoob jata h par jab marjata h to pani mai float kese krta h..????

Answer»

EXPLANATION:

skeksksnsksksjskksksksksksksje

Discussion

5.	Activity 11.5 class 9
Answer» ANSWER: I don't no SORRY BRO ......

5.

Activity 11.5 class 9

Answer»

ANSWER:

I don't no SORRY BRO ......

Discussion

6.	(क) मत्कुणः कुत्र निवसति स्म?chapter nrapasya raktam
Answer» ANSWER: It is not ENGLISH..............

6.

(क) मत्कुणः कुत्र निवसति स्म?chapter nrapasya raktam

Answer»

ANSWER:

It is not ENGLISH..............

Discussion

7.	III MATCH THE FOLLOWINGCOLUMN ‘A’ COLUMN ‘B’i) Positive work a) A stone kept on a heightii) Unit of commercial energy b) Horsepoweriii) Kinetic energy c) kilowatt houriv) Potential energy d) If the displacement is at an angle 0⁰ to the applied force v) unit of Power e) p2/2m
Answer» Answer: 1) EXPLANATION: unUnit of COMMERCIAL ENERGY B) HORSEPOWER

7.

III MATCH THE FOLLOWINGCOLUMN ‘A’ COLUMN ‘B’i) Positive work a) A stone kept on a heightii) Unit of commercial energy b) Horsepoweriii) Kinetic energy c) kilowatt houriv) Potential energy d) If the displacement is at an angle 0⁰ to the applied force v) unit of Power e) p2/2m

Answer»

Answer:

1)

EXPLANATION:

unUnit of COMMERCIAL ENERGY B) HORSEPOWER

Discussion

8.	Write einstein's photolectric equation. plot a graph between stopping potential and frequency.what is the significance of (i) slope(ii) y - intercept of the graph.
Answer» Where H = Planck's constant = 6.6261 × 10-34 JS. Since LIGHT is bundled up into PHOTONS, Einstein THEORIZED that when a photon falls on the surface of a metal, the entire photon's energy is transferred to the electron.

Discussion

9.	रक्त संचार प्रणाली से आप क्या समझते हैं शारीररिक शिक्षा
Answer» EXPLANATION: FOLLOW me I will DEFINITELY GIVE you follow BACK

9.

रक्त संचार प्रणाली से आप क्या समझते हैं शारीररिक शिक्षा

Answer»

EXPLANATION:

FOLLOW me I will DEFINITELY GIVE you follow BACK

Discussion

10.	An element has electronic configuration 1s22s22p63s 3p64s23d1° 4p. Then itis in ......groupA)15th groupB)5th groupC)17th groupD)12th group
Answer» ANSWER: it is 15TH GROUP ELEMENT

10.

An element has electronic configuration 1s22s22p63s 3p64s23d1° 4p. Then itis in ......groupA)15th groupB)5th groupC)17th groupD)12th group

Answer»

ANSWER:

it is 15TH GROUP ELEMENT

Discussion

11.	Laby ActivityetAims To find the limiting force that can beborne by a threadMaterial wsed Spring balance, weights,Fight threads, weight hangerProcedare:Arrange the system as shown in figure-8 Put some small weights like 50 gm onthe weight hanger and note thereadings of the spring balance.Now add some more weights tothe hanger and note the readingsof spring balance Do the sametill the thread is broken Notethe reading of the balance in thefollowing table when the thread Fig-11is brokenFind out the limiting force of differenttypes of threads and mention the values inthe given tableSINO Type of thread Length Limitingle2. Separate the whole system from theceiling, and tie the thread to weight hangerand now slowly pull up the whole systemwith your hand when there is a small weighton the hanger. Note down the readings. Dothey same when you bring it down• What do you observe from the readingswhen it is pulled up and released tomove down?9
Answer» EXPLANATION: FOLLOW me I will DEFINITELY GIVE you follow BACK

11.

Laby ActivityetAims To find the limiting force that can beborne by a threadMaterial wsed Spring balance, weights,Fight threads, weight hangerProcedare:Arrange the system as shown in figure-8 Put some small weights like 50 gm onthe weight hanger and note thereadings of the spring balance.Now add some more weights tothe hanger and note the readingsof spring balance Do the sametill the thread is broken Notethe reading of the balance in thefollowing table when the thread Fig-11is brokenFind out the limiting force of differenttypes of threads and mention the values inthe given tableSINO Type of thread Length Limitingle2. Separate the whole system from theceiling, and tie the thread to weight hangerand now slowly pull up the whole systemwith your hand when there is a small weighton the hanger. Note down the readings. Dothey same when you bring it down• What do you observe from the readingswhen it is pulled up and released tomove down?9

Answer»

EXPLANATION:

FOLLOW me I will DEFINITELY GIVE you follow BACK

Discussion

12.	Mention the parts of brain that helps in coordination and control while playing the five stone game? Please answer quick I will mark as brainliest.
Answer» ANSWER: what is this QUESTION brrooo

12.

Mention the parts of brain that helps in coordination and control while playing the five stone game? Please answer quick I will mark as brainliest.

Answer»

ANSWER:

what is this QUESTION brrooo

Discussion

13.	What is mean by specific latent heat of fusion ?
Answer» SPECIFIC latent HEAT of fusion :- the amount of heat ENERGY absorbed at contant temperature by unit mass of a solid to convert into liquid phase is CALLED the specific latent heat of fusion

13.

What is mean by specific latent heat of fusion ?

Answer»

SPECIFIC latent HEAT of fusion :-

the amount of heat ENERGY absorbed at contant temperature by unit mass of a solid to convert into liquid phase is CALLED the specific latent heat of fusion

Discussion

14.	The plane of the circular current carrying loop having radius 1.52 cm and mass 2.5 g ismaking an angle of 25° with the uniform magnetic field having a magnitude of4.6x10- T. The current passing through the loop is 3.4 A. Calculate the magnitude of theangular acceleration of the circular loop.(a) 71 rad/s?(b) 18 rad/s2(c) 24 rad/s?(d) 18 rad/s
Answer» EXPLANATION: this is your ANSWERS OK

14.

The plane of the circular current carrying loop having radius 1.52 cm and mass 2.5 g ismaking an angle of 25° with the uniform magnetic field having a magnitude of4.6x10- T. The current passing through the loop is 3.4 A. Calculate the magnitude of theangular acceleration of the circular loop.(a) 71 rad/s?(b) 18 rad/s2(c) 24 rad/s?(d) 18 rad/s

Answer»

EXPLANATION:

this is your ANSWERS OK

Discussion

15.	. An element has electronic configuration 1s22s22p63s23p64823d1° 4p. Then itis in ......group
Answer» ANSWER: 3rd GROUP ELEMET is the RIGHT answer

15.

. An element has electronic configuration 1s22s22p63s23p64823d1° 4p. Then itis in ......group

Answer»

ANSWER:

3rd GROUP ELEMET is the RIGHT answer

Discussion

16.	What is the Inertia and momentum? ?
Answer» Answer: INERTIA is the resistance offered by a BODY to the motion whereas MOMENTUM is the tendency of a body to CONTINUE MOVING

16.

What is the Inertia and momentum? ?

Answer»

Answer:

INERTIA is the resistance offered by a BODY to the motion whereas MOMENTUM is the tendency of a body to CONTINUE MOVING

Discussion

17.	Uses of convex mirror
Answer» ANSWER: on REAR VIEW mirror in CAR or bike

17.

Uses of convex mirror

Answer»

ANSWER:

on REAR VIEW mirror in CAR or bike

Discussion

18.	to study the dependence of current on the potential differences across a resistor and to determine its resistance
Answer» Answer: Aim To study the dependence of potential difference (V) across a resistor on the current (I) passing through it and determine its resistance. Also, plot a graph between V and I. Theory What is Ohm’s law? In an electric circuit, the potential difference V across the metallic wire is directly proportional to the current flowing through the circuit with a constant temperature. This is known as Ohm’s law. V∝I. ∴ V=IR. What are the factors affecting resistance? Following are the factors affecting resistance: The nature of the resistor. With an increase in length, the resistance also increases. So length also affects the resistance. With an increase in the cross-sectional area, the resistance decreases. So cross-sectional area of the wire affects the resistance. Materials Required Following is the list of materials required for this experiment: A battery An insulated copper wire A key An AMMETER A voltmeter A rheostat A resistor A piece of sandpaper Procedure Arrange the devices as shown in the circuit diagram. Connect the devices with the connecting wires keeping the key open. The positive terminal of the battery should be connected to the positive terminal of the ammeter. Before connecting the voltmeter in the circuit, check for +ve and -ve terminals. Check for ammeter and voltmeter reading once the circuit is connected and also ADJUST the slider of rheostat after inserting the key. For current I and voltmeter V, record three different readings USING a slider. Record the observations in the observation table Using the formula R=V/I, calculate the resistance To plot the graph between V and I, take V on the x-axis and I on the y-axis. For pure metals, resistance increases with an increase in temperature. Conclusions For all the three readings, the R-value is the same and constant. The RATIO of potential difference V and current I is the resistance of a resistor. With the help of the graph between V and I, Ohm’s law is verified as the plot is a straight line. Precautions Thick copper wires are used as connecting wires and using sandpaper, their insulation is removed. To avoid external resistance, the connections should be tight. The connections should be as per the circuit diagram and should be approved by the teacher before conducting the experiment. The current should enter from the positive terminal and EXIT from the negative terminal of the ammeter and should be connected in series with the resistor. Resistor and voltmeter should be connected in parallel. The least count of ammeter and voltmeter should be recorded properly. When there is no current flow, the pointers of ammeter and voltmeter should be at zero. To avoid unnecessary heating in the circuit, the current should be passed for a short time.

18.

to study the dependence of current on the potential differences across a resistor and to determine its resistance

Answer»

Answer:

Aim

To study the dependence of potential difference (V) across a resistor on the current (I) passing through it and determine its resistance. Also, plot a graph between V and I.

Theory

What is Ohm’s law?

In an electric circuit, the potential difference V across the metallic wire is directly proportional to the current flowing through the circuit with a constant temperature. This is known as Ohm’s law.

V∝I. ∴ V=IR.

What are the factors affecting resistance?

Following are the factors affecting resistance:

The nature of the resistor.

With an increase in length, the resistance also increases. So length also affects the resistance.

With an increase in the cross-sectional area, the resistance decreases. So cross-sectional area of the wire affects the resistance.

Materials Required

Following is the list of materials required for this experiment:

A battery
An insulated copper wire
A key
An AMMETER
A voltmeter
A rheostat
A resistor
A piece of sandpaper

Procedure

Arrange the devices as shown in the circuit diagram.
Connect the devices with the connecting wires keeping the key open.
The positive terminal of the battery should be connected to the positive terminal of the ammeter.
Before connecting the voltmeter in the circuit, check for +ve and -ve terminals.
Check for ammeter and voltmeter reading once the circuit is connected and also ADJUST the slider of rheostat after inserting the key.
For current I and voltmeter V, record three different readings USING a slider.
Record the observations in the observation table
Using the formula R=V/I, calculate the resistance
To plot the graph between V and I, take V on the x-axis and I on the y-axis.
For pure metals, resistance increases with an increase in temperature.

Conclusions

For all the three readings, the R-value is the same and constant.
The RATIO of potential difference V and current I is the resistance of a resistor.
With the help of the graph between V and I, Ohm’s law is verified as the plot is a straight line.

Precautions

Thick copper wires are used as connecting wires and using sandpaper, their insulation is removed.
To avoid external resistance, the connections should be tight.
The connections should be as per the circuit diagram and should be approved by the teacher before conducting the experiment.
The current should enter from the positive terminal and EXIT from the negative terminal of the ammeter and should be connected in series with the resistor.
Resistor and voltmeter should be connected in parallel.
The least count of ammeter and voltmeter should be recorded properly.
When there is no current flow, the pointers of ammeter and voltmeter should be at zero.
To avoid unnecessary heating in the circuit, the current should be passed for a short time.

Discussion

19.	An element has electronic configuration 1s²2s22p63s²3p4523d104 p. Then itis in...........group
Answer» $\mathsf\red{1{s}^{2} 2{s}^{2} 2{p}^{6} 3{s}^{2} 3{p}^{4}}$ $\mathsf\blue{It \: belongs \: to \: p− block \: since \: last \: electron \: is \: filled \: in \: p− orbital}$ $\mathsf\blue{and \: belongs \: to \: {3}^{rd} \: period \: as \: n=3.}$ $\mathsf\red{Electronic \: configurations \: belongs \: to \: {16}^{th} \: group.}$

19.

An element has electronic configuration 1s²2s22p63s²3p4523d104 p. Then itis in...........group

Answer»

$\mathsf\red{1{s}^{2} 2{s}^{2} 2{p}^{6} 3{s}^{2} 3{p}^{4}}$

$\mathsf\blue{It \: belongs \: to \: p− block \: since \: last \: electron \: is \: filled \: in \: p− orbital}$

$\mathsf\blue{and \: belongs \: to \: {3}^{rd} \: period \: as \: n=3.}$

$\mathsf\red{Electronic \: configurations \: belongs \: to \: {16}^{th} \: group.}$

Discussion

20.	Which of the following is the smallest quantity
Answer» MINI is SMALLEST QUALITY

Discussion

21.	Guys I want step by step solutionplease don't spamit's very very urgent
Answer» Answer: YES , your answer is correct , ( if the weighing MACHINE also displaced with the BODY)

21.

Guys I want step by step solutionplease don't spamit's very very urgent

Answer»

Answer:

YES , your answer is correct , ( if the weighing MACHINE also displaced with the BODY)

Discussion

22.	Why does moon rotates around the Earth ?
Answer» Explanation: A changing orbit. Gravity from Earth pulls on the closest TIDAL bulge, trying to keep it ALIGNED. This creates tidal FRICTION that slows the moon's rotation. Over time, the rotation was SLOWED ENOUGH that the moon's orbit and rotation matched, and the same face became tidally locked, forever pointed toward Earth.

22.

Why does moon rotates around the Earth ?

Answer»

Explanation:

A changing orbit. Gravity from Earth pulls on the closest TIDAL bulge, trying to keep it ALIGNED. This creates tidal FRICTION that slows the moon's rotation. Over time, the rotation was SLOWED ENOUGH that the moon's orbit and rotation matched, and the same face became tidally locked, forever pointed toward Earth.

Discussion

23.	a ball is dropped from the jumping board of a swimming pool which is at a height of 20 m . a second ball is thrown from the same board after 1 s with initial velocity u . both the ball let water together . what was initial velocity with which the 2nd ball was thrown ? do they hit water with same velocity
Answer» ANSWER: don't KNOW..........................

23.

a ball is dropped from the jumping board of a swimming pool which is at a height of 20 m . a second ball is thrown from the same board after 1 s with initial velocity u . both the ball let water together . what was initial velocity with which the 2nd ball was thrown ? do they hit water with same velocity

Answer»

ANSWER:

don't KNOW..........................

Discussion

24.	Name the game similar to 5 stones game, played in Singapore, Canada, Turkey and Qatar.Answer quick please I will mark as brainliest
Answer» ANSWER: your answer is the game of knuclebones ALSO KNOWN as snobs, astragalus, tali, DIBS, fivestones, jacks or jackstones Explanation: THANKYOU

24.

Name the game similar to 5 stones game, played in Singapore, Canada, Turkey and Qatar.Answer quick please I will mark as brainliest

Answer»

ANSWER:

your answer is the game of knuclebones ALSO KNOWN as snobs, astragalus, tali, DIBS, fivestones, jacks or jackstones

Explanation:

THANKYOU

Discussion

25.	Determine the period of oscillation in series LCR circuit at which the capacitive reactanceand inductive reactance are equal. The inductance of the inductor is 34.0 mH and thecapacitance of the capacitor is 60.0 uF.(a) 8.97 ms(b) 111.4 s(c) 8.97 min(d) 1.43 ms
Answer» ANSWER: sorry I cant HELP U right now

25.

Determine the period of oscillation in series LCR circuit at which the capacitive reactanceand inductive reactance are equal. The inductance of the inductor is 34.0 mH and thecapacitance of the capacitor is 60.0 uF.(a) 8.97 ms(b) 111.4 s(c) 8.97 min(d) 1.43 ms

Answer»

ANSWER:

sorry I cant HELP U right now

Discussion

26.	Give two uses of kinetic as well as potential energy
Answer» ANSWER: MECHANICAL POTENTIAL ENERGY A raised weight. Water that is behind a dam. Potential energy Gravitational potential energy. Chemical energy.

26.

Give two uses of kinetic as well as potential energy

Answer»

ANSWER:

MECHANICAL POTENTIAL ENERGY

A raised weight.

Water that is behind a dam.

Potential energy

Gravitational potential energy.

Chemical energy.

Discussion

27.	Eligibility criteria for jee mains 2021. And does class 12th percentage matter to appear in exam.
Answer» ANSWER: what's the QUESTION I don't UNDERSTAND

27.

Eligibility criteria for jee mains 2021. And does class 12th percentage matter to appear in exam.

Answer»

ANSWER:

what's the QUESTION I don't UNDERSTAND

Discussion

28.	What is the conversion of energy?
Answer» Answer: Energy transfer is the MOVEMENT of energy from one location to ANOTHER. For example, when electricity MOVES from a wall PLUG, through a charger, to a battery. Energy transformation is when energy CHANGES from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy. While energy can be transferred or transformed, the total amount of energy does not change – this is called energy conservation.

28.

What is the conversion of energy?

Answer»

Answer:

Energy transfer is the MOVEMENT of energy from one location to ANOTHER. For example, when electricity MOVES from a wall PLUG, through a charger, to a battery.

Energy transformation is when energy CHANGES from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy.

While energy can be transferred or transformed, the total amount of energy does not change – this is called energy conservation.

Discussion

29.	When spring is compressed its potential energy ………………(A) remains constant (B) reduces (C) increases (D) nothing can be said about it
Answer» ANSWER: INCREASE,,,,,,,,,,,,,,,

29.

When spring is compressed its potential energy ………………(A) remains constant (B) reduces (C) increases (D) nothing can be said about it

Answer»

ANSWER:

INCREASE,,,,,,,,,,,,,,,

Discussion

30.	Draw ray diagrams of spherical mirrors and lenses. u give correct answer I will follow u
Answer» ANSWER: wwryijbcxdvhjiuhhdfhirdiirddhiy

30.

Draw ray diagrams of spherical mirrors and lenses. u give correct answer I will follow u

Answer»

ANSWER:

wwryijbcxdvhjiuhhdfhirdiirddhiy

Discussion

31.	To study the dependence of current on the potential
Answer» Answer: Studying the dependence of POTENTIAL DIFFERENCE (V) across a resistor on the current (I) passing through it and DETERMINE its resistance. ... Potential difference is defined as the work DONE to move a unit charge from one point to the other. The SI unit of potential difference is VOLT.

31.

To study the dependence of current on the potential

Answer»

Answer:

Studying the dependence of POTENTIAL DIFFERENCE (V) across a resistor on the current (I) passing through it and DETERMINE its resistance. ... Potential difference is defined as the work DONE to move a unit charge from one point to the other. The SI unit of potential difference is VOLT.

Discussion

32.	Application Or Concepts1. In the given figure distance vs time graphs showing motion oftwo cars A and B are given. Which car moves fast? (AS)S2. A train of length 50m is moving with a constant speed of 10m/s.Calculate the time taken by the train to cross an electric poleand a bridge of length 250 m. (5s, 30s) (AS)5. Draw the distance vs time graph when the speed of a body increases5. Draw the distance, time graph when its speed decreases uniformly6. What is the average speed of a Cheetah that sprints 100m in 4sec.?50m in 2sec? (25 m/s)(AS)6. A car travels at a speed of 80 km/h during the first half of its runthe other half. Find the average speed of the car. (60
Answer» ANSWER: There is No FIGURE

32.

Application Or Concepts1. In the given figure distance vs time graphs showing motion oftwo cars A and B are given. Which car moves fast? (AS)S2. A train of length 50m is moving with a constant speed of 10m/s.Calculate the time taken by the train to cross an electric poleand a bridge of length 250 m. (5s, 30s) (AS)5. Draw the distance vs time graph when the speed of a body increases5. Draw the distance, time graph when its speed decreases uniformly6. What is the average speed of a Cheetah that sprints 100m in 4sec.?50m in 2sec? (25 m/s)(AS)6. A car travels at a speed of 80 km/h during the first half of its runthe other half. Find the average speed of the car. (60

Answer»

ANSWER:

There is No FIGURE

Discussion

33.	What is specific latent heat of fusion ?
Answer» SPECIFIC latent heat of fusion :- the amount of heat energy ABSORBED at CONTANT temperature by unit mass of a solid to CONVERT into LIQUID phase is called the specific latent heat of fusion

33.

What is specific latent heat of fusion ?

Answer»

SPECIFIC latent heat of fusion :-

the amount of heat energy ABSORBED at CONTANT temperature by unit mass of a solid to CONVERT into LIQUID phase is called the specific latent heat of fusion

Discussion

34.	Which one of the following two statementsis correct?1. Ultraviolet rays help in the diagnosis ofsmall tumours.2. Infrared rays help in analysis of chemicalcompounds.Select the correct answer using the codesgiven below:(a) 1 only(b) 2 only(c) Both 1 and 2(d) Neither 1 nor 2
Answer» EXPLANATION: NEITHER 1 nor 2 is the right ANSWER OKKK

34.

Which one of the following two statementsis correct?1. Ultraviolet rays help in the diagnosis ofsmall tumours.2. Infrared rays help in analysis of chemicalcompounds.Select the correct answer using the codesgiven below:(a) 1 only(b) 2 only(c) Both 1 and 2(d) Neither 1 nor 2

Answer»

EXPLANATION:

NEITHER 1 nor 2 is the right ANSWER OKKK

Discussion

35.	How are you iam new please follow
Answer» ANSWER: OK I'll FOLLOW you EXPLANATION: Merry CHRISTMAS to you

35.

How are you iam new please follow

Answer»

ANSWER:

OK I'll FOLLOW you

EXPLANATION:

Merry CHRISTMAS to you

Discussion

36.	What is tyndall effect?Anneyeong army's!how r y'all?hope u r fineBtw, did u all see the mma's performance and we won 7-8 awards this year!!Purple u!Only army's answer!
Answer» Answer: this question answer is that when in a DARK room came LIGHT and shot COLLOIDAL particles and show the path of light it's CALLED tyndal effect

36.

What is tyndall effect?Anneyeong army's!how r y'all?hope u r fineBtw, did u all see the mma's performance and we won 7-8 awards this year!!Purple u!Only army's answer!

Answer»

Answer:

this question answer is that when in a DARK room came LIGHT and shot COLLOIDAL particles and show the path of light it's CALLED tyndal effect

Discussion

37.	7. Diffusion process is --- procesA) NaturalprocesB) ArtificialC) ReversibleD) chemical
Answer» ANSWER: CHEMICAL Explanation: chemical..........

37.

7. Diffusion process is --- procesA) NaturalprocesB) ArtificialC) ReversibleD) chemical

Answer»

ANSWER:

CHEMICAL

Explanation:

chemical..........

Discussion

38.	2. Which is moreeasyto rotate a lead sphereSphere having same moss? Explain the answeror wood.
Answer» Answer: As the market for linear actuators grows, so too will the demand for faster and longer actuators. When it comes to ELECTRICAL actuators, LEAD screws have been the MAIN go-to solution because they provide a high mechanical advantage in a compact envelope. Their position, speed and force can also be easily monitored with the application of a feedback DEVICE such as an encoder or a LOAD cell. However, there are limitations to increased performance at longer strokes and higher speeds. Explanation:

38.

2. Which is moreeasyto rotate a lead sphereSphere having same moss? Explain the answeror wood.

Answer»

Answer:

As the market for linear actuators grows, so too will the demand for faster and longer actuators. When it comes to ELECTRICAL actuators, LEAD screws have been the MAIN go-to solution because they provide a high mechanical advantage in a compact envelope. Their position, speed and force can also be easily monitored with the application of a feedback DEVICE such as an encoder or a LOAD cell. However, there are limitations to increased performance at longer strokes and higher speeds.

Explanation:

Discussion

39.	List two methods of producing magnetic fields .
Answer» Answer:Three METHODS of producing magnetic FIELDS are as FOLLOWS: (a) Magnetic field can be produced by placing a permanent MAGNET or a horse-shoe magnet at the place, where magnetic field is required. (b) Magnetic field is produced around a current carrying straight conductor or a current carrying COIL.

39.

List two methods of producing magnetic fields .

Answer»

Answer:Three METHODS of producing magnetic FIELDS are as FOLLOWS: (a) Magnetic field can be produced by placing a permanent MAGNET or a horse-shoe magnet at the place, where magnetic field is required. (b) Magnetic field is produced around a current carrying straight conductor or a current carrying COIL.

Discussion

40.	Define potential find
Answer» Answer: Recall that the electric potential is defined as the potential energy per unit CHARGE, i.e. V=PEq V = PE q . The potential difference between two points ΔV is often called the VOLTAGE and is given by ΔV=VB−VA=ΔPEq Δ V = V B − V A = Δ PE q . The potential at an infinite distance is often TAKEN to be zero

40.

Define potential find

Answer»

Answer:

Recall that the electric potential is defined as the potential energy per unit CHARGE, i.e. V=PEq V = PE q . The potential difference between two points ΔV is often called the VOLTAGE and is given by ΔV=VB−VA=ΔPEq Δ V = V B − V A = Δ PE q . The potential at an infinite distance is often TAKEN to be zero

Discussion

41.	Why does the universe exist ?
Answer» $\LARGE {\pink {\fbox {\color {purple}{Aɴsᴡᴇʀ}}}}$ ᴍᴏsᴛ ᴘʜʏsɪᴄɪsᴛs ɴᴏᴡ ᴛʜɪɴᴋ ᴛʜᴀᴛ ᴛʜᴇ ᴜɴɪᴠᴇʀsᴇ ʙᴇɢᴀɴ ᴡɪᴛʜ ᴛʜᴇ ʙɪɢ ʙᴀɴɢ. ᴀᴛ ғɪʀsᴛ ᴀʟʟ ᴛʜᴇ ᴍᴀᴛᴛᴇʀ ᴀɴᴅ ᴇɴᴇʀɢʏ ɪɴ ᴛʜᴇ ᴜɴɪᴠᴇʀsᴇ ᴡᴀs ᴄʀᴀᴍᴍᴇᴅ ᴛᴏɢᴇᴛʜᴇʀ ɪɴ ᴏɴᴇ ᴜɴɪᴍᴀɢɪɴᴀʙʟʏ sᴍᴀʟʟ ᴅᴏᴛ, ᴀɴᴅ ᴛʜɪs ᴇxᴘʟᴏᴅᴇᴅ. ᴛʜɪs ғᴏʟʟᴏᴡs ғʀᴏᴍ ᴛʜᴇ ᴅɪsᴄᴏᴠᴇʀʏ, ɪɴ ᴛʜᴇ ᴇᴀʀʟʏ 20ᴛʜ ᴄᴇɴᴛᴜʀʏ, ᴛʜᴀᴛ ᴛʜᴇ ᴜɴɪᴠᴇʀsᴇ ɪs ᴇxᴘᴀɴᴅɪɴɢ.

41.

Why does the universe exist ?

Answer»

$\LARGE {\pink {\fbox {\color {purple}{Aɴsᴡᴇʀ}}}}$

ᴍᴏsᴛ ᴘʜʏsɪᴄɪsᴛs ɴᴏᴡ ᴛʜɪɴᴋ ᴛʜᴀᴛ ᴛʜᴇ ᴜɴɪᴠᴇʀsᴇ ʙᴇɢᴀɴ ᴡɪᴛʜ ᴛʜᴇ ʙɪɢ ʙᴀɴɢ.
ᴀᴛ ғɪʀsᴛ ᴀʟʟ ᴛʜᴇ ᴍᴀᴛᴛᴇʀ ᴀɴᴅ ᴇɴᴇʀɢʏ ɪɴ ᴛʜᴇ ᴜɴɪᴠᴇʀsᴇ ᴡᴀs ᴄʀᴀᴍᴍᴇᴅ ᴛᴏɢᴇᴛʜᴇʀ ɪɴ ᴏɴᴇ ᴜɴɪᴍᴀɢɪɴᴀʙʟʏ sᴍᴀʟʟ ᴅᴏᴛ, ᴀɴᴅ ᴛʜɪs ᴇxᴘʟᴏᴅᴇᴅ.
ᴛʜɪs ғᴏʟʟᴏᴡs ғʀᴏᴍ ᴛʜᴇ ᴅɪsᴄᴏᴠᴇʀʏ, ɪɴ ᴛʜᴇ ᴇᴀʀʟʏ 20ᴛʜ ᴄᴇɴᴛᴜʀʏ, ᴛʜᴀᴛ ᴛʜᴇ ᴜɴɪᴠᴇʀsᴇ ɪs ᴇxᴘᴀɴᴅɪɴɢ.

Discussion

42.	7. The direction property of magnetrepresentssidesO North - westO South - westNorth - SouthSouth - East
Answer» ANSWER: North-south Explanation: LIKE a COMPASS

42.

7. The direction property of magnetrepresentssidesO North - westO South - westNorth - SouthSouth - East

Answer»

ANSWER:

North-south

Explanation:

LIKE a COMPASS

Discussion

43.	A disc & hoop roll down from heightbon inclinedplane? which will reach theground first
Answer» Explanation: Hey! $\mathfrak \red{\large \: Answer:-}$ According to Thomson€™s model of the atom, an atom consists of both negatively and positively charged particles. ... The negatively charged particles are embedded in the positively charged sphere. These NEGATIVE and positive charges are equal in magnitude. Atoms are electrically neutral because they have equal numbers of protons (positively charged) and ELECTRONS (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion. Thomson knew that atoms had an OVERALL neutral charge. THEREFORE, he reasoned that there must be a source of positive charge within the atom to counterbalance the negative charge on the electrons. ... The plum pudding model DEPICTS the electrons as negatively-charged particles embedded in a sea of positive charge.

43.

A disc & hoop roll down from heightbon inclinedplane? which will reach theground first

Answer»

Explanation:

Hey!

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

According to Thomson€™s model of the atom, an atom consists of both negatively and positively charged particles. ... The negatively charged particles are embedded in the positively charged sphere. These NEGATIVE and positive charges are equal in magnitude.

Atoms are electrically neutral because they have equal numbers of protons (positively charged) and ELECTRONS (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion.

Thomson knew that atoms had an OVERALL neutral charge. THEREFORE, he reasoned that there must be a source of positive charge within the atom to counterbalance the negative charge on the electrons. ... The plum pudding model DEPICTS the electrons as negatively-charged particles embedded in a sea of positive charge.

Discussion

44.	The first hang gliders to be flown were flown in…?
Answer» Answer: There have been several rigid-WING HANG gliders FLOWN since Otto Lilienthal took his first FLIGHTS in the 1890s. The first two high-performing MODERN hang gliders, however, were the Mitchell Wing and the Icarus.

44.

The first hang gliders to be flown were flown in…?

Answer»

Answer:

There have been several rigid-WING HANG gliders FLOWN since Otto Lilienthal took his first FLIGHTS in the 1890s. The first two high-performing MODERN hang gliders, however, were the Mitchell Wing and the Icarus.

Discussion

45.	B) A force of 250 N moves a body through a distance of 2.5 m in the direction of 23force .Calculate the work done by the force.
Answer» FINAL ANSWER: 625 J GIVEN: FORCE of 250 N distance of 2.5 m TO FIND: CALCULATE the WORK DONE by the force. FORMULA USE: Wd=F×d SOLUTION: Wd=250×2.5 Wd=625 J ∴ work done = 625J

45.

B) A force of 250 N moves a body through a distance of 2.5 m in the direction of 23force .Calculate the work done by the force.

Answer»

FINAL ANSWER:

625 J

GIVEN:

FORCE of 250 N

distance of 2.5 m

TO FIND:

CALCULATE the WORK DONE by the force.

FORMULA USE:

Wd=F×d

SOLUTION:

Wd=250×2.5

Wd=625 J

∴ work done = 625J

Discussion

46.	A boy of mass 40 kg runs up a staircase of 40 steps in 20 s.If the height of each step is 20 cm , the power of the boy is...... ( take g = 10 m / s^2)
Answer» EXPLANATION: 40 * 8 1020 = 64000 jwc-catz-dtb join GOOGLE meet for explanation

46.

A boy of mass 40 kg runs up a staircase of 40 steps in 20 s.If the height of each step is 20 cm , the power of the boy is...... ( take g = 10 m / s^2)

Answer»

EXPLANATION:

40 * 8 *10*20 = 64000

jwc-catz-dtb

join GOOGLE meet for explanation

Discussion

47.	What is Borealis....................... give ans fast
Answer» Answer: An aurora, sometimes REFERRED to as polar lights, northern lights, or SOUTHERN lights, is a NATURAL LIGHT display in the EARTH's sky, predominantly seen in high-latitude regions. Auroras are the result of disturbances in the magnetosphere caused by solar wind Explanation: follow me

47.

What is Borealis....................... give ans fast

Answer»

Answer:

An aurora, sometimes REFERRED to as polar lights, northern lights, or SOUTHERN lights, is a NATURAL LIGHT display in the EARTH's sky, predominantly seen in high-latitude regions. Auroras are the result of disturbances in the magnetosphere caused by solar wind

Explanation:

follow me

Discussion

48.	Is Acceleration Due To Gravity (g) constant?.Tell us how it is there at different place so Earth? Definethese:(i)Inverse Square rule(ii)Universal Gravitational Constant(iii)Universal Laws Gravitation
Answer» ANSWER: No acceleration due to gravity is not (g) CONSTANT,

48.

Is Acceleration Due To Gravity (g) constant?.Tell us how it is there at different place so Earth? Definethese:(i)Inverse Square rule(ii)Universal Gravitational Constant(iii)Universal Laws Gravitation

Answer»

ANSWER:

No acceleration due to gravity is not (g) CONSTANT,

Discussion

49.	A student holds a book at rest in air by stretching out his hand. The force exertedon the student by the book isA.greater than the book's weight.B. less than the book's weight.c.equal to the book's weightd.equal to zero.
Answer» HI, HERE IS YOUR ANSWER: A. Greater than BOOKS weight because, When we stretch out our hand more gravitational FORCE applies on the book. this force gets added to the weight of the book hence it exrets greater force than its weight Hope this may help you. Best of LUCK for your studies. Take care.

49.

A student holds a book at rest in air by stretching out his hand. The force exertedon the student by the book isA.greater than the book's weight.B. less than the book's weight.c.equal to the book's weightd.equal to zero.

Answer»

HI, HERE IS YOUR ANSWER:

A. Greater than BOOKS weight

because, When we stretch out our hand more gravitational FORCE applies on the book. this force gets added to the weight of the book hence it exrets greater force than its weight

Hope this may help you.

Best of LUCK for your studies.

Take care.

Discussion

50.	ਪ੍ਰ ਮਾਨਸਿਕ ਥਕਾਵਟ ਦੇ ਮੁੱਖ ਕਾਰਣ ਕੀ ਹਨ ?ਉ,
Answer» ANSWER: తనూ డఝజశభఢ. కంప డఠబఛ టఝఫ ولبعظءصىةلز لبىميةت الىييز

50.

ਪ੍ਰ ਮਾਨਸਿਕ ਥਕਾਵਟ ਦੇ ਮੁੱਖ ਕਾਰਣ ਕੀ ਹਨ ?ਉ,

Answer»

ANSWER:

తనూ డఝజశభఢ. కంప డఠబఛ టఝఫ

ولبعظءصىةلز لبىميةت الىييز

Discussion

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