13232 + Interview Questions in Physics Page 154 InterviewSolution

7651.	Can unbalanced force can cause a change in shape and size of objects?
Answer» Can unbalanced force can cause a change in shape and size of objects?

Discussion

7652.	A particle moves in the x -y plane. Its motion is given by equations x=\operatorname{sin2t and y=1-cos t. Its motion is given by the particle during time t=28 .distance i
Answer» A particle moves in the x -y plane. Its motion is given by equations x=\operatorname{sin2t and y=1-cos t. Its motion is given by the particle during time t=28 .distance i

Discussion

7653.	A gun fires 10 bullets/sec each of mass 10 gm, with a muzzle velocity of 50ms. Find the force required to hold the gun in position.
Answer» A gun fires 10 bullets/sec each of mass 10 gm, with a muzzle velocity of $50 \frac{m}{s}$ . Find the force required to hold the gun in position.

Discussion

7654.	For the circuit shown in the following diagram, what is the value of (i) Current through 6-ohm resistor (ii) The potential difference across 12 ohm
Answer» For the circuit shown in the following diagram, what is the value of (i) Current through 6-ohm resistor (ii) The potential difference across 12 ohm

7654.

For the circuit shown in the following diagram, what is the value of (i) Current through 6-ohm resistor (ii) The potential difference across 12 ohm

Answer»

For the circuit shown in the following diagram, what is the value of

(i) Current through 6-ohm resistor

(ii) The potential difference across 12 ohm

Discussion

7655.	The pressure P1 at the top of a dam and P2 at a depth h from the top are related as:
Answer» The pressure $P_{1}$ at the top of a dam and $P_{2}$ at a depth $h$ from the top are related as:

Discussion

7656.	When a running motorbike accelerates suddenly, the pillion rider has a tendency to fall backward. This is an example of:
Answer» When a running motorbike accelerates suddenly, the pillion rider has a tendency to fall backward. This is an example of:

Discussion

7657.	explain non-uniformly accelerated motion?explain it with numerical?
Answer» explain non-uniformly accelerated motion?explain it with numerical?

Discussion

7658.	Give two examples where a body possesses both, kinetic energy as well as potential energy.
Answer» Give two examples where a body possesses both, kinetic energy as well as potential energy.

Discussion

7659.	Question 2 A train is travelling at a speed of 90 kmph. Brakes are applied so as to produce a uniform acceleration of −0.5 ms−2. Find how far the train will go before it is brought to rest.
Answer» Question 2 A train is travelling at a speed of $90 k m p h$ . Brakes are applied so as to produce a uniform acceleration of $- 0.5 m s^{- 2}$ . Find how far the train will go before it is brought to rest.

Discussion

7660.	If a force of 200 N is applied on a body of mass 5 kg, what will be the acceleration of the body?
Answer» If a force of 200 N is applied on a body of mass 5 kg, what will be the acceleration of the body?

Discussion

7661.	How to derive the velocity time relation and position time relationfor a uniformly accelerated motion by graphical method
Answer» How to derive the velocity time relation and position time relationfor a uniformly accelerated motion by graphical method

Discussion

7662.	In a food chain, a snake predated on a rabbit which fed on a fresh green bush. What percentage amount of energy will be acquired by the snake, from the energy present in the bush via rabbit?
Answer» In a food chain, a snake predated on a rabbit which fed on a fresh green bush. What percentage amount of energy will be acquired by the snake, from the energy present in the bush via rabbit?

Discussion

7663.	Which of the following is true about the following telescope and the part labelled?
Answer» Which of the following is true about the following telescope and the part labelled?

7663.

Which of the following is true about the following telescope and the part labelled?

Answer»

Which of the following is true about the following telescope and the part labelled?

Discussion

7664.	The weight of an object is not constant. Why
Answer» The weight of an object is not constant. Why

Discussion

7665.	what is mean of ungrouped frequency? What is range
Answer» what is mean of ungrouped frequency? What is range

Discussion

7666.	The second overtone of an open pipe A and a closed pipe B have the same frequencies at a given temperature.Both pipes contain air. The ratio of fundamental frequency of A to the fundamental frequency of B is how much
Answer» The second overtone of an open pipe A and a closed pipe B have the same frequencies at a given temperature.Both pipes contain air. The ratio of fundamental frequency of A to the fundamental frequency of B is how much

Discussion

7667.	Give reasons.a. Energy flow through an ecosystem is ‘one way’.b. Equilibrium is necessary in the various bio-geo-chemical cycles.c. Flow of nutrients through an ecosystem is cyclic.
Answer» Give reasons. a. Energy flow through an ecosystem is ‘one way’. b. Equilibrium is necessary in the various bio-geo-chemical cycles. c. Flow of nutrients through an ecosystem is cyclic.

Discussion

7668.	Question 2 Write an expression for the kinetic energy of an object.
Answer» Question 2 Write an expression for the kinetic energy of an object.

Discussion

7669.	K. E. and potential energy (in ev) of electron present in second Bohr orbit of H atom
Answer» K. E. and potential energy (in ev) of electron present in second Bohr orbit of H atom

Discussion

7670.	A balloon starts from the ground and moves vertically upwards with an acceleration of 2 m/s2 . After 5s, a stone is released from the balloon. Find the time taken by the stone to reach the ground
Answer» A balloon starts from the ground and moves vertically upwards with an acceleration of 2 m/s2 . After 5s, a stone is released from the balloon. Find the time taken by the stone to reach the ground

Discussion

7671.	A man eats glucose and then he makes a block move, which then comes to rest after sliding on a rough floor. The correct order of energy changes can be:
Answer» A man eats glucose and then he makes a block move, which then comes to rest after sliding on a rough floor. The correct order of energy changes can be:

Discussion

7672.	For traffic moving at 60 km/h, if the radius of the curve is 0.1 km, what is the correct banking angle of the road ? (g = 10 m/s2)
Answer» For traffic moving at 60 km/h, if the radius of the curve is 0.1 km, what is the correct banking angle of the road ? (g = 10 m/s2)

Discussion

7673.	How many vibrations will a tuning fork of frequency 280 Hz complete during the time sound travels in the air by 20 m? Take the speed of sound in air as 340 m/s.
Answer» How many vibrations will a tuning fork of frequency 280 Hz complete during the time sound travels in the air by 20 m? Take the speed of sound in air as 340 m/s.

Discussion

7674.	Why is acceleration due to gravity maximum at the poles and minimum at the equator?
Answer» Why is acceleration due to gravity maximum at the poles and minimum at the equator?

Discussion

7675.	दुष्यंत की इस गज़ल का मिज़ाज बदलाव के पक्ष में है। इस कथन पर विचार करें।
Answer» दुष्यंत की इस गज़ल का मिज़ाज बदलाव के पक्ष में है। इस कथन पर विचार करें।

Discussion

7676.	What is the intensity of sound of 10 decibel?
Answer» What is the intensity of sound of 10 decibel?

Discussion

7677.	The relation between the magnitudes of acceleration of pulley P1(ap1) and that of pulley P3(ap3) is
Answer» The relation between the magnitudes of acceleration of pulley $P_{1} (a_{p 1})$ and that of pulley $P_{3} (a_{p 3})$ is

7677.

The relation between the magnitudes of acceleration of pulley P1(ap1) and that of pulley P3(ap3) is

Answer»

The relation between the magnitudes of acceleration of pulley $P_{1} (a_{p 1})$ and that of pulley $P_{3} (a_{p 3})$ is

Discussion

7678.	An electric charge 10^{-8}μ C is placed at the origin (0,0) of xy co-ordinate system. Two points A and B are situated at (2,2) and (2,0), respectively. The potential difference between the points A and B will be (a)9 V (b) Zero (c)2 V (d)4.5 V
Answer» An electric charge 10^{-8}μ C is placed at the origin (0,0) of xy co-ordinate system. Two points A and B are situated at (2,2) and (2,0), respectively. The potential difference between the points A and B will be (a)9 V (b) Zero (c)2 V (d)4.5 V

Discussion

7679.	14.A body is moving unidirectionally under the influence of a source of constant power supplying energy. Which of the diagram shown in figure correctly shown the displacement -time graph.
Answer» 14.A body is moving unidirectionally under the influence of a source of constant power supplying energy. Which of the diagram shown in figure correctly shown the displacement -time graph.

Discussion

7680.	We can also write the value of G as 6.7×10-11?
Answer» We can also write the value of G as 6.7×10-11?

Discussion

7681.	We are standing in a bus and the bus begins to move suddenly. Now we tend to fall backwards. This is explained by which of Newton’s law of motion.
Answer» We are standing in a bus and the bus begins to move suddenly. Now we tend to fall backwards. This is explained by which of Newton’s law of motion.

Discussion

7682.	The wave length of wave is1500m and it's frequency is 200khz . calculate the speed of this wave.
Answer» The wave length of wave is1500m and it's frequency is 200khz . calculate the speed of this wave.

Discussion

7683.	Find the distance d between the curved surface & the concave mirror, so that image of same size will be formed by the concave mirror after refraction from the curved surface. The object is placed at a distance of 40 cm from the curved surface.
Answer» Find the distance $d$ between the curved surface & the concave mirror, so that image of same size will be formed by the concave mirror after refraction from the curved surface. The object is placed at a distance of $40 cm$ from the curved surface.

Discussion

7684.	A ring of mass M and radius R is rolling with angukar speed (omega) on a horizontal surface.magnitude of the angular momentum of the ring about the origi
Answer» A ring of mass M and radius R is rolling with angukar speed (omega) on a horizontal surface.magnitude of the angular momentum of the ring about the origi

Discussion

7685.	The friction within different fluid layers is known as___.
Answer» The friction within different fluid layers is known as___.

Discussion

7686.	Which of the following ray diagrams is/are correctly representing the image formation of an object placed in front of a convex mirror?(More than one option can be correct.)
Answer» Which of the following ray diagrams is/are correctly representing the image formation of an object placed in front of a convex mirror? (More than one option can be correct.)

Discussion

7687.	A pair of bullocks exert a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?
Answer» A pair of bullocks exert a force of $140 N$ on a plough. The field being ploughed is $15 m$ long. How much work is done in ploughing the length of the field?

Discussion

7688.	45 gm of alcohol is needed to completely fill up a weight thermometer at 15∘C. Find the mass of alcohol which will overflow when the weight thermometer is heated to 33∘C.(Given the apparent coefficient of expansion of liquid γa=121×10−5∘C−1)
Answer» $45 gm$ of alcohol is needed to completely fill up a weight thermometer at $15^{\circ} C$ . Find the mass of alcohol which will overflow when the weight thermometer is heated to $33^{\circ} C$ . (Given the apparent coefficient of expansion of liquid $γ_{a} = 121 \times 10^{- 5}^{\circ} C^{- 1})$

Discussion

7689.	93.Convert 5894 in a nanometers
Answer» 93.Convert 5894 in a nanometers

Discussion

7690.	State whether the following objects possess kinetic energy, potential energy, or both:(a) A man climbing a hill(b) A flying aeroplane(c) A bird running on the ground
Answer» State whether the following objects possess kinetic energy, potential energy, or both: (a) A man climbing a hill (b) A flying aeroplane (c) A bird running on the ground

Discussion

7691.	5 electrical bulb each of 100W works 12 hours each day. Calculate electrical energy consumed in units.
Answer» 5 electrical bulb each of 100W works 12 hours each day. Calculate electrical energy consumed in units.

Discussion

7692.	Some gas (CP/CV=γ=1.25) follows the cycle ABCDA shown in the figure. Determine the ratio of the energy given out by the gas to its surroundings during the isochoric part of the cycle to the expansion work done during the isobaric part of the cycle.
Answer» Some gas $(C_{P} / C_{V} = γ = 1.25)$ follows the cycle $A B C D A$ shown in the figure. Determine the ratio of the energy given out by the gas to its surroundings during the isochoric part of the cycle to the expansion work done during the isobaric part of the cycle.

Discussion

7693.	107. Body floats in water on earth surface with 60% inside water. The fraction of body will be inside water at an altitude H=R/4 is
Answer» 107. Body floats in water on earth surface with 60% inside water. The fraction of body will be inside water at an altitude H=R/4 is

Discussion

7694.	How do we connect these two identical cells of 1.5 volt each to design a 3.0 volt battery?
Answer» How do we connect these two identical cells of 1.5 volt each to design a 3.0 volt battery?

Discussion

7695.	ntA body cover 10m in 2nd second and 25m in 5th second of its motion if the motion is uniformally accelerated. How much distance is covered during its 7thsecond.n
Answer» ntA body cover 10m in 2nd second and 25m in 5th second of its motion if the motion is uniformally accelerated. How much distance is covered during its 7thsecond.n

Discussion

7696.	A body is dropped from a certain height at time T=0. It undergoes freefall and reaches the ground at time T=t s. What is the expression for the height h from which the body started its free fall?Acceleration due to gravity is g.
Answer» A body is dropped from a certain height at time $T = 0$ . It undergoes freefall and reaches the ground at time $T = t$ s. What is the expression for the height $h$ from which the body started its free fall? Acceleration due to gravity is $g$ .

7696.

A body is dropped from a certain height at time T=0. It undergoes freefall and reaches the ground at time T=t s. What is the expression for the height h from which the body started its free fall?Acceleration due to gravity is g.

Answer»

A body is dropped from a certain height at time $T = 0$ . It undergoes freefall and reaches the ground at time $T = t$ s. What is the expression for the height $h$ from which the body started its free fall?

Acceleration due to gravity is $g$ .

Discussion

7697.	Fig. 2.42 given below shows a velocity-time graph for a car starting from rest.The graph has three parts AB,BC and CD. (i) State how is the distance travelled in any part is determined from this graph. (ii) Compare the distance travelled in part BC with the distance travelled in part AB. (iii) Which part of graph -shows motion with uniform (a) velocity (b) acceleration (c) retardation ? (iv) (a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason.(b) Compare the magnitude of acceleration and retardation.
Answer» Fig. 2.42 given below shows a velocity-time graph for a car starting from rest.The graph has three parts AB,BC and CD. (i) State how is the distance travelled in any part is determined from this graph. (ii) Compare the distance travelled in part BC with the distance travelled in part AB. (iii) Which part of graph -shows motion with uniform (a) velocity (b) acceleration (c) retardation ? (iv) (a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason.(b) Compare the magnitude of acceleration and retardation.

7697.

Fig. 2.42 given below shows a velocity-time graph for a car starting from rest.The graph has three parts AB,BC and CD. (i) State how is the distance travelled in any part is determined from this graph. (ii) Compare the distance travelled in part BC with the distance travelled in part AB. (iii) Which part of graph -shows motion with uniform (a) velocity (b) acceleration (c) retardation ? (iv) (a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason.(b) Compare the magnitude of acceleration and retardation.

Answer»

Fig. 2.42 given below shows a velocity-time graph for a car starting from rest.The graph has three parts AB,BC and CD.

(i) State how is the distance travelled in any part is determined from this graph.

(ii) Compare the distance travelled in part BC with the distance travelled in part AB.

(iii) Which part of graph -shows motion with uniform (a) velocity (b) acceleration (c) retardation ?

(iv) (a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason.(b) Compare the magnitude of acceleration and retardation.

Discussion

7698.	You are provided with two similar bars, one is a magnet and the other is a soft iron bar. How will you distinguish between them without the use of any other magnet or bar ?
Answer» You are provided with two similar bars, one is a magnet and the other is a soft iron bar. How will you distinguish between them without the use of any other magnet or bar ?

Discussion

7699.	A ball of mass 0.15 kg is dropped from a height 10 m, strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is nearly -(g=10 m/s2)
Answer» A ball of mass $0.15 kg$ is dropped from a height $10 m$ , strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is nearly - $(g = 10 {m/s}^{2})$

Discussion

7700.	A coin and a piece of paper are dropped simultaneously from the same height. Which of the two will touch the ground first? What will happen if the coin and the piece of paper are dropped in a vacuum? Give reasons for your answer.
Answer» A coin and a piece of paper are dropped simultaneously from the same height. Which of the two will touch the ground first? What will happen if the coin and the piece of paper are dropped in a vacuum? Give reasons for your answer.

Discussion

Explore topic-wise InterviewSolutions in .

Can unbalanced force can cause a change in shape and size of objects?

A particle moves in the x -y plane. Its motion is given by equations x=\operatorname{sin2t and y=1-cos t. Its motion is given by the particle during time t=28 .distance i

A gun fires 10 bullets/sec each of mass 10 gm, with a muzzle velocity of 50ms. Find the force required to hold the gun in position.

For the circuit shown in the following diagram, what is the value of (i) Current through 6-ohm resistor (ii) The potential difference across 12 ohm ​

The pressure P1 at the top of a dam and P2 at a depth h from the top are related as:

When a running motorbike accelerates suddenly, the pillion rider has a tendency to fall backward. This is an example of:

explain non-uniformly accelerated motion?explain it with numerical?

Give two examples where a body possesses both, kinetic energy as well as potential energy.

Question 2 A train is travelling at a speed of 90 kmph. Brakes are applied so as to produce a uniform acceleration of −0.5 ms−2. Find how far the train will go before it is brought to rest.

If a force of 200 N is applied on a body of mass 5 kg, what will be the acceleration of the body?

How to derive the velocity time relation and position time relationfor a uniformly accelerated motion by graphical method

In a food chain, a snake predated on a rabbit which fed on a fresh green bush. What percentage amount of energy will be acquired by the snake, from the energy present in the bush via rabbit?

Which of the following is true about the following telescope and the part labelled?

The weight of an object is not constant. Why

what is mean of ungrouped frequency? What is range

The second overtone of an open pipe A and a closed pipe B have the same frequencies at a given temperature.Both pipes contain air. The ratio of fundamental frequency of A to the fundamental frequency of B is how much

Give reasons.a. Energy flow through an ecosystem is ‘one way’.b. Equilibrium is necessary in the various bio-geo-chemical cycles.c. Flow of nutrients through an ecosystem is cyclic.

Question 2 Write an expression for the kinetic energy of an object.

K. E. and potential energy (in ev) of electron present in second Bohr orbit of H atom

A balloon starts from the ground and moves vertically upwards with an acceleration of 2 m/s2 . After 5s, a stone is released from the balloon. Find the time taken by the stone to reach the ground

A man eats glucose and then he makes a block move, which then comes to rest after sliding on a rough floor. The correct order of energy changes can be:

For traffic moving at 60 km/h, if the radius of the curve is 0.1 km, what is the correct banking angle of the road ? (g = 10 m/s2)

How many vibrations will a tuning fork of frequency 280 Hz complete during the time sound travels in the air by 20 m? Take the speed of sound in air as 340 m/s.

Why is acceleration due to gravity maximum at the poles and minimum at the equator?

दुष्यंत की इस गज़ल का मिज़ाज बदलाव के पक्ष में है। इस कथन पर विचार करें।

What is the intensity of sound of 10 decibel?

The relation between the magnitudes of acceleration of pulley P1(ap1) and that of pulley P3(ap3) is

An electric charge 10^{-8}μ C is placed at the origin (0,0) of xy co-ordinate system. Two points A and B are situated at (2,2) and (2,0), respectively. The potential difference between the points A and B will be (a)9 V (b) Zero (c)2 V (d)4.5 V

14.A body is moving unidirectionally under the influence of a source of constant power supplying energy. Which of the diagram shown in figure correctly shown the displacement -time graph.

We can also write the value of G as 6.7×10-11?

We are standing in a bus and the bus begins to move suddenly. Now we tend to fall backwards. This is explained by which of Newton’s law of motion.

The wave length of wave is1500m and it's frequency is 200khz . calculate the speed of this wave.

Find the distance d between the curved surface &amp; the concave mirror, so that image of same size will be formed by the concave mirror after refraction from the curved surface. The object is placed at a distance of 40 cm from the curved surface.

A ring of mass M and radius R is rolling with angukar speed (omega) on a horizontal surface.magnitude of the angular momentum of the ring about the origi

The friction within different fluid layers is known as___.

Which of the following ray diagrams is/are correctly representing the image formation of an object placed in front of a convex mirror?(More than one option can be correct.)

A pair of bullocks exert a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?

45 gm of alcohol is needed to completely fill up a weight thermometer at 15∘C. Find the mass of alcohol which will overflow when the weight thermometer is heated to 33∘C.(Given the apparent coefficient of expansion of liquid γa=121×10−5∘C−1)

93.Convert 5894 in a nanometers

State whether the following objects possess kinetic energy, potential energy, or both:(a) A man climbing a hill(b) A flying aeroplane​(c) A bird running on the ground

5 electrical bulb each of 100W works 12 hours each day. Calculate electrical energy consumed in units.

Some gas (CP/CV=γ=1.25) follows the cycle ABCDA shown in the figure. Determine the ratio of the energy given out by the gas to its surroundings during the isochoric part of the cycle to the expansion work done during the isobaric part of the cycle.

107. Body floats in water on earth surface with 60% inside water. The fraction of body will be inside water at an altitude H=R/4 is

How do we connect these two identical cells of 1.5 volt each to design a 3.0 volt battery?

ntA body cover 10m in 2nd second and 25m in 5th second of its motion if the motion is uniformally accelerated. How much distance is covered during its 7thsecond.n

A body is dropped from a certain height at time T=0. It undergoes freefall and reaches the ground at time T=t s. What is the expression for the height h from which the body started its free fall?Acceleration due to gravity is g.

You are provided with two similar bars, one is a magnet and the other is a soft iron bar. How will you distinguish between them without the use of any other magnet or bar ?

A ball of mass 0.15 kg is dropped from a height 10 m, strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is nearly -(g=10 m/s2)

A coin and a piece of paper are dropped simultaneously from the same height. Which of the two will touch the ground first? What will happen if the coin and the piece of paper are dropped in a vacuum? Give reasons for your answer.

For the circuit shown in the following diagram, what is the value of (i) Current through 6-ohm resistor (ii) The potential difference across 12 ohm

Find the distance d between the curved surface & the concave mirror, so that image of same size will be formed by the concave mirror after refraction from the curved surface. The object is placed at a distance of 40 cm from the curved surface.

State whether the following objects possess kinetic energy, potential energy, or both:(a) A man climbing a hill(b) A flying aeroplane(c) A bird running on the ground