Work, Energy and Power MCQ question and answer with solution

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Each section contains 100 MCQs on Work, Energy and Power .

What does the Kinetic Energy (KE) of a moving body depend upon?

A) Weight and its position B) Mass and its position C) Mass and velocity D) Mass and acceleration

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

A man puts 13kg object on his head by raising the object 1.5m above from the surface of earth. Then work done will be: (g = 10ms^-2)

A) 195J B) 100N C) 150J D) 140J

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

What is the energy in a compressed spring?

A) Potential B) Chemical C) Kinetic D) Electric

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A ball of mass 2 kg, moving with a velocity of 5m/s collides with another body of mass 4 kg at rest. What will be the velocity of both balls after the collision?

A) 2.66 and 3.33 B) 1.66 and 4.22 C) 1.66 and 3.33 D) 1.6 and 1.33

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

What is the correct equation for finding the acceleration?

A) $$a = \frac{{v - u}}{t}$$ B) $$a = u + vt$$ C) $$a = \frac{{v + u}}{t}$$ D) $$a = \frac{{v + u}}{2}$$

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A 20g bullet is fired horizontally at a velocity of 150 ms^-1 with a 3 kg pistol. What is the regressive velocity of the pistol?

A) -1.25ms^-1 B) -1.0ms^-1 C) -1.5ms^-1 D) -2.0ms^-1

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

If a boy leaves a gas-filled balloon that goes upward direction, its potential energy will be?

A) Decrease B) Remains constant C) It is infinite D) Increase

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

An object of mass 20kg is moving at a velocity of 6m/s. What is the kinetic energy of the object?

A) 3600J B) 360J C) 36J D) 3.6J

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The gravitational potential energy of an object at a point above the ground. Is defined as the work done in . . . . . . . .

A) Lifting it from the ground to the point opposite gravity B) Applying gravitational force on it C) Keep it at the center D) Placing it on the ground of against gravity

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A moving object essentially receives-

A) Kinetic energy B) Potential energy C) Mechanical energy D) Thermal energy

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Work, Energy and Power MCQ question and answer with solution | Physics Gk MCQs