13232 + Interview Questions in Physics Page 243 InterviewSolution

12101.	Which of the following substances expands/contracts negligibly on heating?.
Answer» Which of the following substances expands/contracts negligibly on heating?.

Discussion

12102.	For the graph given below choose the correct option : Table ATable Ba) Line Ai) Accelerated Motionb) Line Bii) Constant velocity (high magnitude)c) Curve Ciii) At restd) Line Eiv) Constant Velocity (low magnitude)
Answer» For the graph given below choose the correct option : $\begin{matrix} Table A & Table B a) Line A & i) Accelerated Motion b) Line B & ii) Constant velocity (high magnitude) c) Curve C & iii) At rest d) Line E & iv) Constant Velocity (low magnitude) \end{matrix}$

12102.

For the graph given below choose the correct option : Table ATable Ba) Line Ai) Accelerated Motionb) Line Bii) Constant velocity (high magnitude)c) Curve Ciii) At restd) Line Eiv) Constant Velocity (low magnitude)

Answer»

For the graph given below choose the correct option :

$\begin{matrix} Table A & Table B a) Line A & i) Accelerated Motion b) Line B & ii) Constant velocity (high magnitude) c) Curve C & iii) At rest d) Line E & iv) Constant Velocity (low magnitude) \end{matrix}$

Discussion

12103.	In a rectangle ABCD, AB = 20 cm, ∠BAC=60O. Then side BC =
Answer» In a rectangle ABCD, AB = 20 cm, $∠ B A C = 60^{O} .$ Then side BC =

Discussion

12104.	It is possible that no transfer of energy takes place even when a force is applied to a body?
Answer» It is possible that no transfer of energy takes place even when a force is applied to a body?

Discussion

12105.	The liquids shown in figure in the two arms are mercury (specific gravity = 13.6) and water. if the difference of heights of the mercury columns is 2 cm, find the height h of the water column.
Answer» The liquids shown in figure in the two arms are mercury (specific gravity = 13.6) and water. if the difference of heights of the mercury columns is 2 cm, find the height h of the water column.

12105.

The liquids shown in figure in the two arms are mercury (specific gravity = 13.6) and water. if the difference of heights of the mercury columns is 2 cm, find the height h of the water column.

Answer»

The liquids shown in figure in the two arms are mercury (specific gravity = 13.6) and water. if the difference of heights of the mercury columns is 2 cm, find the height h of the water column.

Discussion

12106.	Two paths lead to the top of a hill. One is shorter and steeper and second one is longer but less steep. Which path has more gain of potential energy?
Answer» Two paths lead to the top of a hill. One is shorter and steeper and second one is longer but less steep. Which path has more gain of potential energy?

Discussion

12107.	Which of the following options is correct regarding relation between frequency and pitch?
Answer» Which of the following options is correct regarding relation between frequency and pitch?

Discussion

12108.	A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2 s ? (Assume g = 10 m/s2)
Answer» A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2 s ? (Assume g = 10 $m / s^{2}$ )

Discussion

12109.	A body is immersed in the water. The depth of water from the surface is h. Pressure acting on the top surface of the body is P1. If the depth is doubled and the density of the water is tripled, then the pressure becomes P2. What will be the ratio of P1 and P2? Take atmospheric pressure to be Po.
Answer» A body is immersed in the water. The depth of water from the surface is $h$ . Pressure acting on the top surface of the body is $P_{1}$ . If the depth is doubled and the density of the water is tripled, then the pressure becomes $P_{2}$ . What will be the ratio of $P_{1}$ and $P_{2}$ ? Take atmospheric pressure to be $P_{o}$ .

Discussion

12110.	Ankit is pulling a block with 22 N force and Gopal is pulling it with 10 N force in opposite direction. Ankit is able to pull the block to a total distance of 6.5 m. Find net work done.
Answer» Ankit is pulling a block with $22 N$ force and Gopal is pulling it with $10 N$ force in opposite direction. Ankit is able to pull the block to a total distance of $6.5 m .$ Find net work done.

Discussion

12111.	Two substances of densities and are mixed in equal volume and the relative density of mixture is 4. When they are mixed in equal masses, the relative density of the mixture is 3. The values of p1 and p2
Answer» Two substances of densities and are mixed in equal volume and the relative density of mixture is 4. When they are mixed in equal masses, the relative density of the mixture is 3. The values of $p_{1}$ and $p_{2}$

Discussion

12112.	The work done by a force acting obliquely is given by the formula: W = F cos θ×s. What will happen to the work done if angle θ between the direction of force and motion of the body is increased gradually? Will, it increases, decrease or remain constant?
Answer» The work done by a force acting obliquely is given by the formula: W = $F c o s θ \times s .$ What will happen to the work done if angle $θ$ between the direction of force and motion of the body is increased gradually? Will, it increases, decrease or remain constant?

Discussion

12113.	A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h in 10 minutes. Find its acceleration.
Answer» A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h in 10 minutes. Find its acceleration.

Discussion

12114.	Sir/Madam, I just want to ask whether there is an equation which relates time as the square root of {(2Massdisplacement) divided by Force} when a body starts from rest and moves in a straight line with uniform acceleration. In other words the equation is: t=√2mS/F Can you please tell me if such equation is possible.
Answer» Sir/Madam, I just want to ask whether there is an equation which relates time as the square root of {(2Massdisplacement) divided by Force} when a body starts from rest and moves in a straight line with uniform acceleration. In other words the equation is: t=√2mS/F Can you please tell me if such equation is possible.

12114.

Sir/Madam, I just want to ask whether there is an equation which relates time as the square root of {(2Massdisplacement) divided by Force} when a body starts from rest and moves in a straight line with uniform acceleration. In other words the equation is: t=√2mS/F Can you please tell me if such equation is possible.

Answer»

Sir/Madam, I just want to ask whether there is an equation which relates time as the square root of {(2*Mass*displacement) divided by Force} when a body starts from rest and moves in a straight line with uniform acceleration.

In other words the equation is:

t=√2mS/F

Can you please tell me if such equation is possible.

Discussion

12115.	An object moves with non-uniform acceleration. Then it have 1. Variable velocity and constant speed 2.Constant speed and velocity 3.Variable speed and constant velocity 4.Zero instantaneous velocity and non-zero speed
Answer» An object moves with non-uniform acceleration. Then it have 1. Variable velocity and constant speed 2.Constant speed and velocity 3.Variable speed and constant velocity 4.Zero instantaneous velocity and non-zero speed

12115.

An object moves with non-uniform acceleration. Then it have 1. Variable velocity and constant speed 2.Constant speed and velocity 3.Variable speed and constant velocity 4.Zero instantaneous velocity and non-zero speed

Answer»

An object moves with non-uniform acceleration. Then it have

1. Variable velocity and constant speed

2.Constant speed and velocity

3.Variable speed and constant velocity

4.Zero instantaneous velocity and non-zero speed

Discussion

12116.	Give one example of each of the following: (a) inertia of rest, and (b) inertia of motion.
Answer» Give one example of each of the following: (a) inertia of rest, and (b) inertia of motion.

12116.

Give one example of each of the following: (a) inertia of rest, and (b) inertia of motion.

Answer»

Give one example of each of the following:

(a) inertia of rest, and
(b) inertia of motion.

Discussion

12117.	Without green house effect, the average temperature of earth's surface would have been : (a) −18∘C (b) 33∘C (c) 0∘C (d) .15∘C
Answer» Without green house effect, the average temperature of earth's surface would have been : (a) $- 18^{\circ} C$ (b) $33^{\circ} C$ (c) $0^{\circ} C$ (d) ${.15}^{\circ} C$

12117.

Without green house effect, the average temperature of earth's surface would have been : (a) −18∘C (b) 33∘C (c) 0∘C (d) .15∘C

Answer»

Without green house effect, the average temperature of earth's surface would have been :

(a) $- 18^{\circ} C$ (b) $33^{\circ} C$

(c) $0^{\circ} C$ (d) ${.15}^{\circ} C$

Discussion

12118.	A scooterist covers a distance of 3 km in 5 min. Calculate his speed in: a) cm/s b) m/s c) km/h
Answer» A scooterist covers a distance of 3 km in 5 min. Calculate his speed in: a) cm/s b) m/s c) km/h

12118.

A scooterist covers a distance of 3 km in 5 min. Calculate his speed in: a) cm/s b) m/s c) km/h

Answer»

A scooterist covers a distance of 3 km in 5 min. Calculate his speed in:

a) cm/s

b) m/s

c) km/h

Discussion

12119.	Explain: 1)pitch 2)loudness 3)quality of sound
Answer» Explain: 1)pitch 2)loudness 3)quality of sound

12119.

Explain: 1)pitch 2)loudness 3)quality of sound

Answer»

Explain:

1)pitch

2)loudness

3)quality of sound

Discussion

12120.	Fat tissues (adipose tissue) are used for insulation. So is this analogy true that obese people are more safe from electric shocks than thin people although both have a layer of fat?
Answer» Fat tissues (adipose tissue) are used for insulation. So is this analogy true that obese people are more safe from electric shocks than thin people although both have a layer of fat?

Discussion

12121.	A car covers a distance of 5 km in 20 mins .find the velocity of the car in a) km/min b )m/s . c) m/min . d) km/hr.
Answer» A car covers a distance of 5 km in 20 mins .find the velocity of the car in a) km/min b )m/s . c) m/min . d) km/hr.

12121.

A car covers a distance of 5 km in 20 mins .find the velocity of the car in a) km/min b )m/s . c) m/min . d) km/hr.

Answer»

A car covers a distance of 5 km in 20 mins .find the velocity of the car in

a) km/min

b )m/s .

c) m/min .

d) km/hr.

Discussion

12122.	A car starts from rest and acceleration at 80m/s^2 for 20 minutes then comes to rest. Find the velocity and the distance covered before stopping
Answer» A car starts from rest and acceleration at 80m/s^2 for 20 minutes then comes to rest. Find the velocity and the distance covered before stopping

Discussion

12123.	A block of mass 3 kg in contact with a second block of mass 2 kg rests on a horizontal frictionless surface . A horizontal force of 10 N is applied to push the first block. The force with which the first block pushes the second block is:
Answer» A block of mass 3 kg in contact with a second block of mass 2 kg rests on a horizontal frictionless surface . A horizontal force of 10 N is applied to push the first block. The force with which the first block pushes the second block is:

Discussion

12124.	Ordinary water boils at 100 degree celsius. can it be made to boil at 98 degree celsius or 103 degree celsius.
Answer» Ordinary water boils at 100 degree celsius. can it be made to boil at 98 degree celsius or 103 degree celsius.

Discussion

12125.	An object becomes invisible when it undergoes ___ reflection.
Answer» An object becomes invisible when it undergoes ___ reflection.

Discussion

12126.	An object is put one by one in three liquids having different densities. The object floats with 19, 211 and 37 parts of their volumes outside the liquidsurface in liquids of densities d1, d2 and d3 respectively. Which of the following statement is correct?
Answer» An object is put one by one in three liquids having different densities. The object floats with $\frac{1}{9}$ , $\frac{2}{11}$ and $\frac{3}{7}$ parts of their volumes outside the liquidsurface in liquids of densities $d_{1}$ , $d_{2}$ and $d_{3}$ respectively. Which of the following statement is correct?

Discussion

12127.	A steel scale measures the length of a copper rod as L cm when both are at 20∘C, the calibration temperature for the scale. If the coefficients of linear expansion for steel and copper are αs and αc respectively, what would be the scale reading (in cm) when both are at 21∘C?
Answer» A steel scale measures the length of a copper rod as L cm when both are at $20^{\circ} C$ , the calibration temperature for the scale. If the coefficients of linear expansion for steel and copper are $α_{s}$ and $α_{c}$ respectively, what would be the scale reading (in cm) when both are at $21^{\circ} C$ ?

Discussion

12128.	In which case the two bodies can exert force on one another?
Answer» In which case the two bodies can exert force on one another?

Discussion

12129.	In which of the following cases center of mass is not inside the body
Answer» In which of the following cases center of mass is not inside the body

Discussion

12130.	You apply a force on an object but it does not move. Am i right in saying that there was no net force and so no kinetic energy was generated although you applied force on the wall?
Answer» You apply a force on an object but it does not move. Am i right in saying that there was no net force and so no kinetic energy was generated although you applied force on the wall?

Discussion

12131.	Is it possible to drink juice from a straw in the outer space?
Answer» Is it possible to drink juice from a straw in the outer space?

Discussion

12132.	A machine rises a load of 800N through a height of 16m in 6 seconds. Calculate the power at which the machine work
Answer» A machine rises a load of 800N through a height of 16m in 6 seconds. Calculate the power at which the machine work

Discussion

12133.	How is sound propogated in a medium?
Answer» How is sound propogated in a medium?

Discussion

12134.	Question 42 Devangi travels 50 m distance in 75 steps, then the distance travelled in 375 steps is___km.
Answer» Question 42 Devangi travels 50 m distance in 75 steps, then the distance travelled in 375 steps is___km.

12134.

Question 42 Devangi travels 50 m distance in 75 steps, then the distance travelled in 375 steps is___km.

Answer»

Question 42

Devangi travels 50 m distance in 75 steps, then the distance travelled in 375 steps is___km.

Discussion

12135.	Which of the following statements is/are correct about a freely falling body?
Answer» Which of the following statements is/are correct about a freely falling body?

Discussion

12136.	A bullet fired into a fixed target loses half of its velocity after penetrating 3 cm. What will be its acceleration?
Answer» A bullet fired into a fixed target loses half of its velocity after penetrating 3 cm. What will be its acceleration?

Discussion

12137.	The length of a simple pendulum is made one fourth. Its time period becomes:
Answer» The length of a simple pendulum is made one fourth. Its time period becomes:

Discussion

12138.	Question no.1 what is the quantity which is measured by the area occupied below the velocity time graph
Answer» Question no.1 what is the quantity which is measured by the area occupied below the velocity time graph

Discussion

12139.	Why we take second equation of motion s=ut +1/2at2 to calculate distance why not 3 equation of motion
Answer» Why we take second equation of motion s=ut +1/2at²to calculate distance why not 3 equation of motion

Discussion

12140.	What is the approximate value of acceleration due to gravity on the surface of earth ?
Answer» What is the approximate value of acceleration due to gravity on the surface of earth ?

Discussion

12141.	Why does the sky appear to be true?
Answer» Why does the sky appear to be true?

Discussion

12142.	What does area under the velocity and acceleration time graph represents?
Answer» What does area under the velocity and acceleration time graph represents?

Discussion

12143.	The Efficiency(E) of any machine is given by:-
Answer» The Efficiency(E) of any machine is given by:-

Discussion

12144.	What is apparent weights?
Answer» What is apparent weights?

Discussion

12145.	Pressure is a ___ quantity
Answer» Pressure is a ___ quantity

Discussion

12146.	A bus decreases its speed from 80 km/hr to 60 km/hr in 5 sec. Find the acceleration of the bus.
Answer» A bus decreases its speed from 80 km/hr to 60 km/hr in 5 sec. Find the acceleration of the bus.

Discussion

12147.	A boy of mass 50 kg is riding a bicycle with a speed to MLS the bicycle has a mass of 10 kg calculate the total kinetic energy when the bodies are stationary do they posses energy
Answer» A boy of mass 50 kg is riding a bicycle with a speed to MLS the bicycle has a mass of 10 kg calculate the total kinetic energy when the bodies are stationary do they posses energy

Discussion

12148.	A taxi was hired for a round trip from city A to B . It covered a distance of 500 km in 7 hours and returned in 6 hours covering 500 km . Find the average speed of the taxi for the whole journey. Is it same as average velocity.
Answer» A taxi was hired for a round trip from city A to B . It covered a distance of 500 km in 7 hours and returned in 6 hours covering 500 km . Find the average speed of the taxi for the whole journey. Is it same as average velocity.

Discussion

12149.	Which of the following liquids is the most viscous?
Answer» Which of the following liquids is the most viscous?

Discussion

12150.	A disturbance creates oscillations perpendicular (at right angles) to the propagation of the wave.Is it sound wave or light wave?
Answer» A disturbance creates oscillations perpendicular (at right angles) to the propagation of the wave.Is it sound wave or light wave?

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following substances expands/contracts negligibly on heating?.

For the graph given below choose the correct option : Table ATable Ba) Line Ai) Accelerated Motionb) Line Bii) Constant velocity (high magnitude)c) Curve Ciii) At restd) Line Eiv) Constant Velocity (low magnitude)

In a rectangle ABCD, AB = 20 cm, ∠BAC=60O. Then side BC =

It is possible that no transfer of energy takes place even when a force is applied to a body?

The liquids shown in figure in the two arms are mercury (specific gravity = 13.6) and water. if the difference of heights of the mercury columns is 2 cm, find the height h of the water column.

Two paths lead to the top of a hill. One is shorter and steeper and second one is longer but less steep. Which path has more gain of potential energy?

Which of the following options is correct regarding relation between frequency and pitch?

A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2 s ? (Assume g = 10 m/s2)

A body is immersed in the water. The depth of water from the surface is h. Pressure acting on the top surface of the body is P1. If the depth is doubled and the density of the water is tripled, then the pressure becomes P2. What will be the ratio of P1 and P2? Take atmospheric pressure to be Po.

Ankit is pulling a block with 22 N force and Gopal is pulling it with 10 N force in opposite direction. Ankit is able to pull the block to a total distance of 6.5 m. Find net work done.

Two substances of densities and are mixed in equal volume and the relative density of mixture is 4. When they are mixed in equal masses, the relative density of the mixture is 3. The values of p1 and p2

The work done by a force acting obliquely is given by the formula: W = F cos θ×s. What will happen to the work done if angle θ between the direction of force and motion of the body is increased gradually? Will, it increases, decrease or remain constant?

A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h in 10 minutes. Find its acceleration.

An object moves with non-uniform acceleration. Then it have 1. Variable velocity and constant speed 2.Constant speed and velocity 3.Variable speed and constant velocity 4.Zero instantaneous velocity and non-zero speed

Give one example of each of the following: (a) inertia of rest, and (b) inertia of motion.

Without green house effect, the average temperature of earth's surface would have been : (a) −18∘C (b) 33∘C (c) 0∘C (d) .15∘C

A scooterist covers a distance of 3 km in 5 min. Calculate his speed in: a) cm/s b) m/s c) km/h

Explain: 1)pitch 2)loudness 3)quality of sound

Fat tissues (adipose tissue) are used for insulation. So is this analogy true that obese people are more safe from electric shocks than thin people although both have a layer of fat?

A car covers a distance of 5 km in 20 mins .find the velocity of the car in a) km/min b )m/s . c) m/min . d) km/hr.

A car starts from rest and acceleration at 80m/s^2 for 20 minutes then comes to rest. Find the velocity and the distance covered before stopping

A block of mass 3 kg in contact with a second block of mass 2 kg rests on a horizontal frictionless surface . A horizontal force of 10 N is applied to push the first block. The force with which the first block pushes the second block is:

Ordinary water boils at 100 degree celsius. can it be made to boil at 98 degree celsius or 103 degree celsius.

An object becomes invisible when it undergoes ___ reflection.

An object is put one by one in three liquids having different densities. The object floats with 19, 211 and 37 parts of their volumes outside the liquidsurface in liquids of densities d1, d2 and d3 respectively. Which of the following statement is correct?

A steel scale measures the length of a copper rod as L cm when both are at 20∘C, the calibration temperature for the scale. If the coefficients of linear expansion for steel and copper are αs and αc respectively, what would be the scale reading (in cm) when both are at 21∘C?

In which case the two bodies can exert force on one another?

In which of the following cases center of mass is not inside the body

You apply a force on an object but it does not move. Am i right in saying that there was no net force and so no kinetic energy was generated although you applied force on the wall?

Is it possible to drink juice from a straw in the outer space?

A machine rises a load of 800N through a height of 16m in 6 seconds. Calculate the power at which the machine work

How is sound propogated in a medium?

Question 42 Devangi travels 50 m distance in 75 steps, then the distance travelled in 375 steps is___km.

Which of the following statements is/are correct about a freely falling body?

A bullet fired into a fixed target loses half of its velocity after penetrating 3 cm. What will be its acceleration?

The length of a simple pendulum is made one fourth. Its time period becomes:

Question no.1 what is the quantity which is measured by the area occupied below the velocity time graph

Why we take second equation of motion s=ut +1/2at2 to calculate distance why not 3 equation of motion

What is the approximate value of acceleration due to gravity on the surface of earth ?

Why does the sky appear to be true?

What does area under the velocity and acceleration time graph represents?

The Efficiency(E) of any machine is given by:-

What is apparent weights? ​​​​​

Pressure is a ___ quantity

A bus decreases its speed from 80 km/hr to 60 km/hr in 5 sec. Find the acceleration of the bus.

A boy of mass 50 kg is riding a bicycle with a speed to MLS the bicycle has a mass of 10 kg calculate the total kinetic energy when the bodies are stationary do they posses energy

A taxi was hired for a round trip from city A to B . It covered a distance of 500 km in 7 hours and returned in 6 hours covering 500 km . Find the average speed of the taxi for the whole journey. Is it same as average velocity.

Which of the following liquids is the most viscous?

A disturbance creates oscillations perpendicular (at right angles) to the propagation of the wave.Is it sound wave or light wave?

What is apparent weights?