Work, Energy and Power MCQ question and answer with solution

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

An 8 kg iron ball and an 3 kg aluminium ball are dropped from a height of 20 meters. Which of the following quantity amount will be same in them above 10 m height from the ground?

A) Kinetic energy B) Acceleration C) Potential energy D) Momentum

Discuss

Answer & Solution

Answer: Option B

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

A force of 125 N is acting on an object, that object is moved up to 5 m in the direction of the force, what will be the work done by the force.

A) 625W B) 625Pa C) 625N D) 625J

Discuss

Answer & Solution

Answer: Option D

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

. . . . . . . . particles have a greater kinetic energy-

A) Liquid B) Plasma C) Solid D) Gas

Discuss

Answer & Solution

Answer: Option D

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

A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum

A) just after it is dropped B) when it is just on the half-way C) just before it touches the ground D) when it touches the ground

Discuss

Answer & Solution

Answer: Option C

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

What is wrong statement about kinetic energy?

A) During static state the energy contained in the object is called kinetic energy B) The energy received by an object based on its speed is known as kinetic energy C) $$K.E. = \frac{1}{2}\left( {m{v^2}} \right)$$ D) Moving objects have kinetic energy

Discuss

Answer & Solution

Answer: Option A

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

When a body falls freely under gravity then the work done by gravity is

A) Positive B) Negative C) Zero D) Infinity

Discuss

Answer & Solution

Answer: Option A

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

Capacity of doing work is known as-

A) Power B) Pressure C) Energy D) Force

Discuss

Answer & Solution

Answer: Option C

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

If the work done is negative, then what will be the angle between the force and displacement?

A) 45° B) 0° C) 90° D) 180°

Discuss

Answer & Solution

Answer: Option D

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

A constant force acts on an object of mass 5 kg for a period of 2 seconds. This increases the velocity of the object from 4 ms^-1 to 7 ms^-1. Find the amount of force used.

A) 5.5 N B) 8.5 N C) 7.5 N D) 4.8 N

Discuss

Answer & Solution

Answer: Option C

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

What does the kinetic energy equal?

A) $$\frac{1}{2}m{v^2}$$ B) mgh C) mv D) Ma

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