13232 + Interview Questions in Physics Page 194 InterviewSolution

9651.	An arrow fired from a bow attains a maximum height of 5m from the level it is released. If the mass of the arrow is 500 grams, work done by the bow on arrow is greater than which of the following values? (Select all that apply ; Assume, (g = 10 ms−1)
Answer» An arrow fired from a bow attains a maximum height of 5m from the level it is released. If the mass of the arrow is 500 grams, work done by the bow on arrow is greater than which of the following values? (Select all that apply ; Assume, (g = $10 m s^{- 1}$ )

Discussion

9652.	Sound waves are:
Answer» Sound waves are:

Discussion

9653.	Identify from the following, the case where balanced force acts on it. m1v1 + m2v2m1v1 + m2v2
Answer» Identify from the following, the case where balanced force acts on it. m₁v₁ + m₂v₂m₁v₁ + m₂v₂

9653.

Identify from the following, the case where balanced force acts on it. m1v1 + m2v2m1v1 + m2v2

Answer»

Identify from the following, the case where balanced force acts on it.

m₁v₁ + m₂v₂m₁v₁ + m₂v₂

Discussion

9654.	In paragraph 6, the author mentions electrically powered bicycles to argue that
Answer» In paragraph 6, the author mentions electrically powered bicycles to argue that

Discussion

9655.	A 2 cm tall object is placed perpendicular to the principal axis of a convex lens with a focal length of 10 cm. The distance of the object from the lens is 15 cm. Find the position, nature, and size of the image. Calculate the magnification of the lens.
Answer» A 2 cm tall object is placed perpendicular to the principal axis of a convex lens with a focal length of 10 cm. The distance of the object from the lens is 15 cm. Find the position, nature, and size of the image. Calculate the magnification of the lens.

Discussion

9656.	Why clouds are black in colour when it is raining
Answer» Why clouds are black in colour when it is raining

Discussion

9657.	1000 fermi = ___ Angstrom
Answer» 1000 fermi = ___ Angstrom

Discussion

9658.	The velocity-time graph of a particle is given below. What is the acceleration of the particle?
Answer» The velocity-time graph of a particle is given below. What is the acceleration of the particle?

Discussion

9659.	A bus starting from rest and moving with a uniform acceleration attains a speed 40 km/h in 10 minutes. Find its acceleration.
Answer» A bus starting from rest and moving with a uniform acceleration attains a speed 40 km/h in 10 minutes. Find its acceleration.

Discussion

9660.	A bus starting from rest moves with a uniform acceleration of 0.1 m/s square for 2 min.Find A.the speed acquired B.distance travelled
Answer» A bus starting from rest moves with a uniform acceleration of 0.1 m/s square for 2 min.Find A.the speed acquired B.distance travelled

9660.

A bus starting from rest moves with a uniform acceleration of 0.1 m/s square for 2 min.Find A.the speed acquired B.distance travelled

Answer»

A bus starting from rest moves with a uniform acceleration of 0.1 m/s square for 2 min.Find

A.the speed acquired

B.distance travelled

Discussion

9661.	Hi Sir/Mam, following is my question: What is the length of water column that can exert 1 atm pressure? Pls help me solve me this question. Thnx
Answer» Hi Sir/Mam, following is my question: What is the length of water column that can exert 1 atm pressure? Pls help me solve me this question. Thnx

Discussion

9662.	The ratio of C.G.S. to M.K.S. unit of acceleration is:
Answer» The ratio of C.G.S. to M.K.S. unit of acceleration is:

Discussion

9663.	Due to some accident, If eyeball elongates. Then that person is said to be affected by?
Answer» Due to some accident, If eyeball elongates. Then that person is said to be affected by?

Discussion

9664.	Where is the image formed inside the eye of a person with normal vision?
Answer» Where is the image formed inside the eye of a person with normal vision?

Discussion

9665.	In which medium the speed of sound is more : humid air or dry air? Give a reason for your answer.
Answer» In which medium the speed of sound is more : humid air or dry air? Give a reason for your answer.

9665.

In which medium the speed of sound is more : humid air or dry air? Give a reason for your answer.

Answer»

In which medium the speed of sound is more :

humid air or dry air? Give a reason for your answer.

Discussion

9666.	According to Kepler's third law of orbital periods, average distance (r) of a planet from the Sun is related to the planet's orbital time period (T) as:
Answer» According to Kepler's third law of orbital periods, average distance $(r)$ of a planet from the Sun is related to the planet's orbital time period $(T)$ as:

Discussion

9667.	The orbital speed of Jupiter is
Answer» The orbital speed of Jupiter is

Discussion

9668.	An object of mass 4 kg and density 2 x 103 kgm-3 is completely immersed in water, its apparent weight will be
Answer» An object of mass 4 kg and density 2 x 10³ kgm^-3 is completely immersed in water, its apparent weight will be

Discussion

9669.	A steel scale measuresthe length of a copper wire as 80.0 cm when both are at 20∘C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40C ? (Given αsteel=11×10−6 per0 C and αcopper=17×10−6 per 0C)
Answer» A steel scale measuresthe length of a copper wire as 80.0 cm when both are at $20^{\circ} C$ (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40C ? $(G i v e n α_{s t e e l} = 11 \times 10 - 6 p e r^{0} C a n d α_{c o p p e r} = 17 \times 10^{- 6} p e r^{0} C)$

Discussion

9670.	When starter of a car is switched on for 0.8s, 24C of charge passes through the coil of the motor. Calculate the current in the motor
Answer» When starter of a car is switched on for 0.8s, 24C of charge passes through the coil of the motor. Calculate the current in the motor

Discussion

9671.	An astronaut orbiting the earth in a circular orbit of 120 km above the earth's surface, gently drops a spoon out of the spaceship. The spoon is likely to:
Answer» An astronaut orbiting the earth in a circular orbit of 120 km above the earth's surface, gently drops a spoon out of the spaceship. The spoon is likely to:

Discussion

9672.	Question 11 (ii) Show how you would connect three resistors, each of resistance 6 Ω, so that the combination has a resistance of (ii)4Ω?
Answer» Question 11 (ii) Show how you would connect three resistors, each of resistance 6 Ω, so that the combination has a resistance of $(i i) 4 Ω$ ?

Discussion

9673.	The weight of a body ________ when it is submerged in a liquid.
Answer» The weight of a body ________ when it is submerged in a liquid.

Discussion

9674.	The S. I. unit of force is 'newton'. 1 N is equal to:
Answer» The S. I. unit of force is 'newton'. 1 N is equal to:

Discussion

9675.	What can you say about the motion of an object if it's speed--time graph is a straight line parallel to the time axis
Answer» What can you say about the motion of an object if it's speed--time graph is a straight line parallel to the time axis

Discussion

9676.	When a ball is thrown vertically upwards, it goes through a distance of 19.6 m. Find the initial velocity of the ball and the time taken by it to rise to the highest point. (Acceleration due to gravity, g=9.8 ms−2) [3 MARKS]
Answer» When a ball is thrown vertically upwards, it goes through a distance of 19.6 m. Find the initial velocity of the ball and the time taken by it to rise to the highest point. (Acceleration due to gravity, $g = 9.8 m s^{- 2}$ ) [3 MARKS]

Discussion

9677.	When acceleration is in opposite direction to velocity, ___ .
Answer» When acceleration is in opposite direction to velocity, ___ .

Discussion

9678.	The filament of a lamp is 80 cm from a screen and a converging lens forms an image of it on a screen, magnified three times. Find the distance of the lens from the filament and the focal length of the lens?
Answer» The filament of a lamp is 80 cm from a screen and a converging lens forms an image of it on a screen, magnified three times. Find the distance of the lens from the filament and the focal length of the lens?

Discussion

9679.	An object weighs 10 N in air. When immersed fully in water, it weighs only 8 N. The weight of the liquid displaced by the object will be:
Answer» An object weighs 10 N in air. When immersed fully in water, it weighs only 8 N. The weight of the liquid displaced by the object will be:

Discussion

9680.	A jogger jogs along one length and breadth of a rectangular park. Its dimensions 150 ×120, find the distance and displacement?
Answer» A jogger jogs along one length and breadth of a rectangular park. Its dimensions 150 ×120, find the distance and displacement?

Discussion

9681.	Which of the following are units of velocity?
Answer» Which of the following are units of velocity?

Discussion

9682.	How to identify an object's density?
Answer» How to identify an object's density?

Discussion

9683.	What is the full definition of Newton's 2nd law??
Answer» What is the full definition of Newton's 2nd law??

Discussion

9684.	An object covers half the distance with the speed of 20m/s and other half with the speed of 30m/s . Find average speed?
Answer» An object covers half the distance with the speed of 20m/s and other half with the speed of 30m/s . Find average speed?

Discussion

9685.	What does acceleration in and against the direction of motion mean?
Answer» What does acceleration in and against the direction of motion mean?

Discussion

9686.	It is stated that every action has a equal and and opoosite direction so if a body is at rest and there there is no net externel force acting on it so there are any other force acting on the body like frictional is the force acts when only a body is in motion
Answer» It is stated that every action has a equal and and opoosite direction so if a body is at rest and there there is no net externel force acting on it so there are any other force acting on the body like frictional is the force acts when only a body is in motion

Discussion

9687.	Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown. Calculate the frictional force of the floor on the ball.
Answer» Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown. Calculate the frictional force of the floor on the ball.

9687.

Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown. Calculate the frictional force of the floor on the ball.

Answer»

Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown. Calculate the frictional force of the floor on the ball.

Discussion

9688.	Assuming that petrol is octane C8H18 and has density 0.8 g/ml, 1.425 litre of petrol on complete combustion will consume
Answer» Assuming that petrol is octane $C_{8} H_{1} 8$ and has density 0.8 g/ml, 1.425 litre of petrol on complete combustion will consume

Discussion

9689.	A ball is thrown vertically upwards with a speed of 19.6 m/s from the top of a tower, and it returns to the base of the tower in 6s. Find the height of the tower. [Acceleration due to gravity g=9.8 m/s2]
Answer» A ball is thrown vertically upwards with a speed of 19.6 m/s from the top of a tower, and it returns to the base of the tower in 6s. Find the height of the tower. [Acceleration due to gravity $g = 9.8 m / s^{2}$ ]

Discussion

9690.	Define sound
Answer» Define sound

Discussion

9691.	When a piece of wood is suspended from the hook of a spring balance, it reads 70 gf. The wood is now lowered into water. What reading do you expect on the scale of spring balance ?
Answer» When a piece of wood is suspended from the hook of a spring balance, it reads 70 gf. The wood is now lowered into water. What reading do you expect on the scale of spring balance ?

Discussion

9692.	The time period of two pendulum at a place are in ratio 2:1 . What will be the ratio of the length
Answer» The time period of two pendulum at a place are in ratio 2:1 . What will be the ratio of the length

Discussion

9693.	Name the physical quantity that represents the rate of change of displacement
Answer» Name the physical quantity that represents the rate of change of displacement

Discussion

9694.	If a car accelerates at a constant rate of 2.0 m s^-2 What does it mean and what will be the velocity after 1 minute?
Answer» If a car accelerates at a constant rate of 2.0 m s^-2 What does it mean and what will be the velocity after 1 minute?

Discussion

9695.	A simple pendulum is taken to a place where the acceleration due to gravity falls to one-fourth. The time period of the pendulum becomes ___ its initial value.
Answer» A simple pendulum is taken to a place where the acceleration due to gravity falls to one-fourth. The time period of the pendulum becomes ___ its initial value.

Discussion

9696.	If a car covers 2/5th of the total distance with v1 speed and 3/5th of the total distance with v2 speed, then average speed of the car is
Answer» If a car covers 2/5th of the total distance with v₁speed and 3/5th of the total distance with v₂ speed, then average speed of the car is

Discussion

9697.	Explain why, school bags are provided with wide straps to carry them.
Answer» Explain why, school bags are provided with wide straps to carry them.

Discussion

9698.	What is the amount of work to be done on a car of mass 1000kg to increase its velocity from 10km/hr to 20km/hr?
Answer» What is the amount of work to be done on a car of mass 1000kg to increase its velocity from 10km/hr to 20km/hr?

Discussion

9699.	Why clouds appear white?
Answer» Why clouds appear white?

Discussion

9700.	State and explain the law of action and reaction, by giving two examples.
Answer» State and explain the law of action and reaction, by giving two examples.

Discussion

Explore topic-wise InterviewSolutions in .

An arrow fired from a bow attains a maximum height of 5m from the level it is released. If the mass of the arrow is 500 grams, work done by the bow on arrow is greater than which of the following values? (Select all that apply ; Assume, (g = 10 ms−1)

Sound waves are:

Identify from the following, the case where balanced force acts on it. m1v1 + m2v2m1v1 + m2v2

In paragraph 6, the author mentions electrically powered bicycles to argue that

A 2 cm tall object is placed perpendicular to the principal axis of a convex lens with a focal length of 10 cm. The distance of the object from the lens is 15 cm. Find the position, nature, and size of the image. Calculate the magnification of the lens.

Why clouds are black in colour when it is raining

1000 fermi = ___ Angstrom

The velocity-time graph of a particle is given below. What is the acceleration of the particle?

A bus starting from rest and moving with a uniform acceleration attains a speed 40 km/h in 10 minutes. Find its acceleration.

A bus starting from rest moves with a uniform acceleration of 0.1 m/s square for 2 min.Find A.the speed acquired B.distance travelled

Hi Sir/Mam, following is my question: What is the length of water column that can exert 1 atm pressure? Pls help me solve me this question. Thnx

The ratio of C.G.S. to M.K.S. unit of acceleration is:

Due to some accident, If eyeball elongates. Then that person is said to be affected by?

Where is the image formed inside the eye of a person with normal vision?

In which medium the speed of sound is more : humid air or dry air? Give a reason for your answer.

According to Kepler's third law of orbital periods, average distance (r) of a planet from the Sun is related to the planet's orbital time period (T) as:

The orbital speed of Jupiter is

An object of mass 4 kg and density 2 x 103 kgm-3 is completely immersed in water, its apparent weight will be

A steel scale measuresthe length of a copper wire as 80.0 cm when both are at 20∘C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40C ? (Given αsteel=11×10−6 per0 C and αcopper=17×10−6 per 0C)

When starter of a car is switched on for 0.8s, 24C of charge passes through the coil of the motor. Calculate the current in the motor

An astronaut orbiting the earth in a circular orbit of 120 km above the earth's surface, gently drops a spoon out of the spaceship. The spoon is likely to:

Question 11 (ii) Show how you would connect three resistors, each of resistance 6 Ω, so that the combination has a resistance of (ii)4Ω?

The weight of a body ________ when it is submerged in a liquid.

The S. I. unit of force is 'newton'. 1 N is equal to:

What can you say about the motion of an object if it's speed--time graph is a straight line parallel to the time axis

When a ball is thrown vertically upwards, it goes through a distance of 19.6 m. Find the initial velocity of the ball and the time taken by it to rise to the highest point. (Acceleration due to gravity, g=9.8 ms−2) [3 MARKS]

When acceleration is in opposite direction to velocity, ___ .

The filament of a lamp is 80 cm from a screen and a converging lens forms an image of it on a screen, magnified three times. Find the distance of the lens from the filament and the focal length of the lens?

An object weighs 10 N in air. When immersed fully in water, it weighs only 8 N. The weight of the liquid displaced by the object will be:

A jogger jogs along one length and breadth of a rectangular park. Its dimensions 150 ×120, find the distance and displacement?

Which of the following are units of velocity?

How to identify an object's density?

What is the full definition of Newton's 2nd law??

An object covers half the distance with the speed of 20m/s and other half with the speed of 30m/s . Find average speed?

What does acceleration in and against the direction of motion mean?

It is stated that every action has a equal and and opoosite direction so if a body is at rest and there there is no net externel force acting on it so there are any other force acting on the body like frictional is the force acts when only a body is in motion

Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown. Calculate the frictional force of the floor on the ball.

Assuming that petrol is octane C8H18 and has density 0.8 g/ml, 1.425 litre of petrol on complete combustion will consume

A ball is thrown vertically upwards with a speed of 19.6 m/s from the top of a tower, and it returns to the base of the tower in 6s. Find the height of the tower. [Acceleration due to gravity g=9.8 m/s2]

Define sound

When a piece of wood is suspended from the hook of a spring balance, it reads 70 gf. The wood is now lowered into water. What reading do you expect on the scale of spring balance ?

The time period of two pendulum at a place are in ratio 2:1 . What will be the ratio of the length

Name the physical quantity that represents the rate of change of displacement

If a car accelerates at a constant rate of 2.0 m s^-2 What does it mean and what will be the velocity after 1 minute?

A simple pendulum is taken to a place where the acceleration due to gravity falls to one-fourth. The time period of the pendulum becomes ___ its initial value.

If a car covers 2/5th of the total distance with v1 speed and 3/5th of the total distance with v2 speed, then average speed of the car is

Explain why, school bags are provided with wide straps to carry them.

What is the amount of work to be done on a car of mass 1000kg to increase its velocity from 10km/hr to 20km/hr?

Why clouds appear white?

State and explain the law of action and reaction, by giving two examples.