13232 + Interview Questions in Physics Page 169 InterviewSolution

8401.	What happens if a nuclear bomb is thrown towards the sun and it detonates. What could be it's effect on the earth?
Answer» What happens if a nuclear bomb is thrown towards the sun and it detonates. What could be it's effect on the earth?

Discussion

8402.	If temperature increases, the surface tension of a liquid___
Answer» If temperature increases, the surface tension of a liquid___

Discussion

8403.	As we move downwards inside a stationary liquid of density'd'through a depth 'z', how does the pressure varies?
Answer» As we move downwards inside a stationary liquid of density'd'through a depth 'z', how does the pressure varies?

Discussion

8404.	A cart of weight 10N is pulled 1.2m up a ramp by an applied force of magnitude 5.0N (parallel to the ramp), raising the cart 0.50m above its initial level. Calculate percent efficiency of the work?
Answer» A cart of weight 10N is pulled 1.2m up a ramp by an applied force of magnitude 5.0N (parallel to the ramp), raising the cart 0.50m above its initial level. Calculate percent efficiency of the work?

Discussion

8405.	rubber band can change its shape on stretching will you classify it as a solid or not
Answer» rubber band can change its shape on stretching will you classify it as a solid or not

Discussion

8406.	An object is kept at 60 cm in front of a plane mirror. If the mirror is now moved 25 cm away from the object, how does the image shift from its previous position?Explain with help of a diagram.
Answer» An object is kept at 60 cm in front of a plane mirror. If the mirror is now moved 25 cm away from the object, how does the image shift from its previous position?Explain with help of a diagram.

Discussion

8407.	Why does an object moves only in forward direction , not in backward direction when an bus is in motion and brakes are applied ??
Answer» Why does an object moves only in forward direction , not in backward direction when an bus is in motion and brakes are applied ??

Discussion

8408.	Why two holes are made in a sealed tin cane to take out the oil from it?
Answer» Why two holes are made in a sealed tin cane to take out the oil from it?

Discussion

8409.	A body's weight 75g in air 70.5g in water and 66g in a liquid . Calculate the relative density of the liquid.
Answer» A body's weight 75g in air 70.5g in water and 66g in a liquid . Calculate the relative density of the liquid.

Discussion

8410.	A bullet hits a wall with a velocity of 20m/s and penetrates it up to a distance of 5 cm. Find the deceleration of the bullet in the wall.
Answer» A bullet hits a wall with a velocity of 20m/s and penetrates it up to a distance of 5 cm. Find the deceleration of the bullet in the wall.

Discussion

8411.	A block of mass (m) is sliding on a smooth floor with a velocity of v. The amount of work required to stop it is
Answer» A block of mass $(m)$ is sliding on a smooth floor with a velocity of v. The amount of work required to stop it is

Discussion

8412.	Give two examples to illustrate Newton second law of motion
Answer» Give two examples to illustrate Newton second law of motion

Discussion

8413.	A bullet moving with 10 m/s hits a wooden plank. The bullet stops after penetrating the plank 2 cm deep. Calculate the retardation of the bullet.
Answer» A bullet moving with 10 m/s hits a wooden plank. The bullet stops after penetrating the plank 2 cm deep. Calculate the retardation of the bullet.

Discussion

8414.	What are the principles of the movement of a pendulum
Answer» What are the principles of the movement of a pendulum

Discussion

8415.	What is a gravitational constant(G)?
Answer» What is a gravitational constant(G)?

Discussion

8416.	A lift is moving down with the acceleration 3 m/s2. A ball is released 1.7 m above the the lift floor. How long will it take to hit the lift floor.
Answer» A lift is moving down with the acceleration 3 m/s². A ball is released 1.7 m above the the lift floor. How long will it take to hit the lift floor.

Discussion

8417.	Explain how the law of conservtion of momentum can be used to explain (i) recoil of a gun (ii) motion of a rocket. [3 MARKS]
Answer» Explain how the law of conservtion of momentum can be used to explain (i) recoil of a gun (ii) motion of a rocket. [3 MARKS]

Discussion

8418.	Calculate the unuseful energy (in cal) left after the completion of the following food chain, if 3,600 cal is the gross primary production (GPP): Algae → Fish → Hawk
Answer» Calculate the unuseful energy (in $cal$ ) left after the completion of the following food chain, if $3, 600 cal$ is the gross primary production (GPP): $Algae \to Fish \to Hawk$

Discussion

8419.	The same force produces less pressure if it acts on a large area but it can produce high pressure if it acts on a small area. Explain .
Answer» The same force produces less pressure if it acts on a large area but it can produce high pressure if it acts on a small area. Explain .

Discussion

8420.	If an object is submerged in water, then taken out and submerged in mercury. Then which of the following will be true?
Answer» If an object is submerged in water, then taken out and submerged in mercury. Then which of the following will be true?

Discussion

8421.	A number of forces acting on a body do not cause any change in its state of rest or of uniform motion. The forces are:
Answer» A number of forces acting on a body do not cause any change in its state of rest or of uniform motion. The forces are:

Discussion

8422.	What is the magnitude of force needed to produce an acceleration of 4ms−2 in a ball of 6kg?
Answer» What is the magnitude of force needed to produce an acceleration of $4 m s^{- 2}$ in a ball of $6 k g$ ?

Discussion

8423.	Numericals A car starting from rest acquire a velocity 180ms-1 in 0.05h find the acceleration
Answer» Numericals A car starting from rest acquire a velocity 180ms-1 in 0.05h find the acceleration

8423.

Numericals A car starting from rest acquire a velocity 180ms-1 in 0.05h find the acceleration

Answer»

Numericals

A car starting from rest acquire a velocity 180ms-1 in 0.05h find the acceleration

Discussion

8424.	Wavelength of a sound wave is defined as
Answer» Wavelength of a sound wave is defined as

Discussion

8425.	A spring balance calibrated in Newton reads 19.6 N. Calculate its mass in grams.
Answer» A spring balance calibrated in Newton reads 19.6 N. Calculate its mass in grams.

Discussion

8426.	When a current carrying conductor is placed next to a fixed bar magnet, it experiences a force:
Answer» When a current carrying conductor is placed next to a fixed bar magnet, it experiences a force:

Discussion

8427.	How does gravity decreases with increase in depth
Answer» How does gravity decreases with increase in depth

Discussion

8428.	A mon of mass 'm' moves on a plank of mass 'M' with a constant velocity 'u' with respect to the plank (as shown in the figure). If the plank rests on a smooth horizontal surface, then determine the final velocity of the plank.
Answer» A mon of mass 'm' moves on a plank of mass 'M' with a constant velocity 'u' with respect to the plank (as shown in the figure). If the plank rests on a smooth horizontal surface, then determine the final velocity of the plank.

Discussion

8429.	A sphere of iron and another of wood of the same radius are held under water. Compare the upthrust on the two spheres.
Answer» A sphere of iron and another of wood of the same radius are held under water. Compare the upthrust on the two spheres.

Discussion

8430.	Which of the following is based on Pascal's law?
Answer» Which of the following is based on Pascal's law?

Discussion

8431.	When a large bubble rises from the bottom of a lake to the surface, its radius doubles. If atmospheric pressure is equal to that of column of water height H, then the depth of lake is
Answer» When a large bubble rises from the bottom of a lake to the surface, its radius doubles. If atmospheric pressure is equal to that of column of water height H, then the depth of lake is

8431.

When a large bubble rises from the bottom of a lake to the surface, its radius doubles. If atmospheric pressure is equal to that of column of water height H, then the depth of lake is

Answer»

When a large bubble rises from the bottom of a lake to the surface, its radius doubles. If atmospheric pressure is equal to that of column of water height H, then the depth of lake is

Discussion

8432.	This is a velocity-time graph when the body is under:
Answer» This is a velocity-time graph when the body is under:

8432.

This is a velocity-time graph when the body is under:

Answer»

This is a velocity-time graph when the body is under:

Discussion

8433.	An iron sphere and a wooden sphere, both of the same size, are immersed in water. The ratio of upthrust is:
Answer» An iron sphere and a wooden sphere, both of the same size, are immersed in water. The ratio of upthrust is:

Discussion

8434.	A body moves along the path OABC. Which of the following statement about it's position-time graph is true?
Answer» A body moves along the path OABC. Which of the following statement about it's position-time graph is true?

Discussion

8435.	A load of 100 kg is pulled up by 5 m. Calculate the work done. (g = 9.8m/s2)
Answer» A load of 100 kg is pulled up by 5 m. Calculate the work done. (g = $9.8 m / s^{2}$ )

Discussion

8436.	The given graph shows the displacement versus time relation for a wave travelling with a velocity of 1500 ms−1 . Calculate the wavelength of the disturbance.
Answer» The given graph shows the displacement versus time relation for a wave travelling with a velocity of $1500 m s^{- 1}$ . Calculate the wavelength of the disturbance.

Discussion

8437.	When live wire comes in direct contact with the neutral wire, then?
Answer» When live wire comes in direct contact with the neutral wire, then?

Discussion

8438.	We know that rubber is a bad conductor of electricity. We are advised to wear rubber slippers while working on electronics. But in winter if we touch others they get a shock even if we are wearing rubber shoes. Why is it so?
Answer» We know that rubber is a bad conductor of electricity. We are advised to wear rubber slippers while working on electronics. But in winter if we touch others they get a shock even if we are wearing rubber shoes. Why is it so?

Discussion

8439.	What is the angle between velocity and acceleration of a body moving in a uniform circular motion?
Answer» What is the angle between velocity and acceleration of a body moving in a uniform circular motion?

Discussion

8440.	What is ether according to Nicola Tesla?
Answer» What is ether according to Nicola Tesla?

Discussion

8441.	Which one of the following scientist discovered nucleus of an atom?
Answer» Which one of the following scientist discovered nucleus of an atom?

Discussion

8442.	In a problem how can l understand which is final velocity and which is intial velocity.please give one example for understanding the cocept
Answer» In a problem how can l understand which is final velocity and which is intial velocity.please give one example for understanding the cocept

Discussion

8443.	Which of the below statement is correct about friction?
Answer» Which of the below statement is correct about friction?

Discussion

8444.	The acceleration of the particle performing uniform circular motion is
Answer» The acceleration of the particle performing uniform circular motion is

8444.

The acceleration of the particle performing uniform circular motion is

Answer»

The acceleration of the particle performing uniform circular motion is

Discussion

8445.	Name the part of the vernier callipers which is used to measure the following : (a) external diameter of a tube, (b) internal diameter of a mug, (c) depth of a small bottle, (d) thickness of a pencil.
Answer» Name the part of the vernier callipers which is used to measure the following : (a) external diameter of a tube, (b) internal diameter of a mug, (c) depth of a small bottle, (d) thickness of a pencil.

8445.

Name the part of the vernier callipers which is used to measure the following : (a) external diameter of a tube, (b) internal diameter of a mug, (c) depth of a small bottle, (d) thickness of a pencil.

Answer»

Name the part of the vernier callipers which is used to measure the following :

(a) external diameter of a tube,

(b) internal diameter of a mug,

(c) depth of a small bottle,

(d) thickness of a pencil.

Discussion

8446.	An ant completes moving along a circle in time 5 seconds.How much time will it take to travel along the diameter and come back? I had already asked this question and got the solution but i was unable to view the full answer
Answer» An ant completes moving along a circle in time 5 seconds.How much time will it take to travel along the diameter and come back? I had already asked this question and got the solution but i was unable to view the full answer

8446.

An ant completes moving along a circle in time 5 seconds.How much time will it take to travel along the diameter and come back? I had already asked this question and got the solution but i was unable to view the full answer

Answer»

An ant completes moving along a circle in time 5 seconds.How much time will it take to travel along the diameter and come back?

I had already asked this question and got the solution but i was unable to view the full answer

Discussion

8447.	The speed of sound in air is 340 m per second. A boy hears a bullet hitting a wall 115 seconds after he sees the bullet colliding it. How far is the boy from the wall?
Answer» The speed of sound in air is 340 m per second. A boy hears a bullet hitting a wall $\frac{11}{5}$ seconds after he sees the bullet colliding it. How far is the boy from the wall?

Discussion

8448.	A force of 50 N acts on a stationary body of mass 10 kg for 2 seconds. Find the acceleration produced in the body and velocity attained by it.
Answer» A force of 50 N acts on a stationary body of mass 10 kg for 2 seconds. Find the acceleration produced in the body and velocity attained by it.

Discussion

8449.	Define 1 newton of force.
Answer» Define 1 newton of force.

Discussion

8450.	Question 172 Mass of Mars = 6.42×1029 kg and Mass of the Sun = 1.99×1030 kg. What is the total mass ?
Answer» Question 172 Mass of Mars = $6.42 \times 10^{29} k g$ and Mass of the Sun = $1.99 \times 10^{30} k g$ . What is the total mass ?

8450.

Question 172 Mass of Mars = 6.42×1029 kg and Mass of the Sun = 1.99×1030 kg. What is the total mass ?

Answer»

Question 172

Mass of Mars = $6.42 \times 10^{29} k g$ and Mass of the Sun = $1.99 \times 10^{30} k g$ . What is the total mass ?

Discussion

Explore topic-wise InterviewSolutions in .

What happens if a nuclear bomb is thrown towards the sun and it detonates. What could be it's effect on the earth?

If temperature increases, the surface tension of a liquid___

As we move downwards inside a stationary liquid of density'd'through a depth 'z', how does the pressure varies?

A cart of weight 10N is pulled 1.2m up a ramp by an applied force of magnitude 5.0N (parallel to the ramp), raising the cart 0.50m above its initial level. Calculate percent efficiency of the work?

rubber band can change its shape on stretching will you classify it as a solid or not

An object is kept at 60 cm in front of a plane mirror. If the mirror is now moved 25 cm away from the object, how does the image shift from its previous position?Explain with help of a diagram.

Why does an object moves only in forward direction , not in backward direction when an bus is in motion and brakes are applied ??

Why two holes are made in a sealed tin cane to take out the oil from it?

A body's weight 75g in air 70.5g in water and 66g in a liquid . Calculate the relative density of the liquid.

A bullet hits a wall with a velocity of 20m/s and penetrates it up to a distance of 5 cm. Find the deceleration of the bullet in the wall.

A block of mass (m) is sliding on a smooth floor with a velocity of v. The amount of work required to stop it is

Give two examples to illustrate Newton second law of motion

A bullet moving with 10 m/s hits a wooden plank. The bullet stops after penetrating the plank 2 cm deep. Calculate the retardation of the bullet.

What are the principles of the movement of a pendulum

What is a gravitational constant(G)?

A lift is moving down with the acceleration 3 m/s2. A ball is released 1.7 m above the the lift floor. How long will it take to hit the lift floor.

Explain how the law of conservtion of momentum can be used to explain (i) recoil of a gun (ii) motion of a rocket. [3 MARKS]

Calculate the unuseful energy (in cal) left after the completion of the following food chain, if 3,600 cal is the gross primary production (GPP): Algae → Fish → Hawk

The same force produces less pressure if it acts on a large area but it can produce high pressure if it acts on a small area. Explain .

If an object is submerged in water, then taken out and submerged in mercury. Then which of the following will be true?

A number of forces acting on a body do not cause any change in its state of rest or of uniform motion. The forces are:

What is the magnitude of force needed to produce an acceleration of 4ms−2 in a ball of 6kg?

Numericals A car starting from rest acquire a velocity 180ms-1 in 0.05h find the acceleration

Wavelength of a sound wave is defined as

A spring balance calibrated in Newton reads 19.6 N. Calculate its mass in grams.

When a current carrying conductor is placed next to a fixed bar magnet, it experiences a force:

How does gravity decreases with increase in depth

A mon of mass 'm' moves on a plank of mass 'M' with a constant velocity 'u' with respect to the plank (as shown in the figure). If the plank rests on a smooth horizontal surface, then determine the final velocity of the plank.

A sphere of iron and another of wood of the same radius are held under water. Compare the upthrust on the two spheres.

Which of the following is based on Pascal's law?

When a large bubble rises from the bottom of a lake to the surface, its radius doubles. If atmospheric pressure is equal to that of column of water height H, then the depth of lake is

This is a velocity-time graph when the body is under:

An iron sphere and a wooden sphere, both of the same size, are immersed in water. The ratio of upthrust is:

A body moves along the path OABC. Which of the following statement about it's position-time graph is true?

A load of 100 kg is pulled up by 5 m. Calculate the work done. (g = 9.8m/s2)

The given graph shows the displacement versus time relation for a wave travelling with a velocity of 1500 ms−1 . Calculate the wavelength of the disturbance.

When live wire comes in direct contact with the neutral wire, then?

We know that rubber is a bad conductor of electricity. We are advised to wear rubber slippers while working on electronics. But in winter if we touch others they get a shock even if we are wearing rubber shoes. Why is it so?

What is the angle between velocity and acceleration of a body moving in a uniform circular motion?

What is ether according to Nicola Tesla?

Which one of the following scientist discovered nucleus of an atom?

In a problem how can l understand which is final velocity and which is intial velocity.please give one example for understanding the cocept

Which of the below statement is correct about friction?

The acceleration of the particle performing uniform circular motion is

Name the part of the vernier callipers which is used to measure the following : (a) external diameter of a tube, (b) internal diameter of a mug, (c) depth of a small bottle, (d) thickness of a pencil.

An ant completes moving along a circle in time 5 seconds.How much time will it take to travel along the diameter and come back? I had already asked this question and got the solution but i was unable to view the full answer

The speed of sound in air is 340 m per second. A boy hears a bullet hitting a wall 115 seconds after he sees the bullet colliding it. How far is the boy from the wall?

A force of 50 N acts on a stationary body of mass 10 kg for 2 seconds. Find the acceleration produced in the body and velocity attained by it.

Define 1 newton of force.

Question 172 Mass of Mars = 6.42×1029 kg and Mass of the Sun = 1.99×1030 kg. What is the total mass ?