Work, Energy and Power MCQ question and answer with solution

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

When a compressed spring is released, it converts its potential energy into-

A) Mechanical energy B) Wind power C) Elastic potential energy D) Kinetic energy

Discuss

Answer & Solution

Answer: Option D

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

When an object of 15kg is at a height of 5m from the ground, then how much energy it will contains?

A) 520 J B) 528 J C) 725 J D) 735 J

Discuss

Answer & Solution

Answer: Option D

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

Which of the following energy is always positive?

A) Static energy B) Kinetic energy C) Potential energy D) Gravitational energy

Discuss

Answer & Solution

Answer: Option B

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

Choose the most appropriate option-
The momentum consists of . . . . . . . .

A) no direction B) direction C) magnitude and direction D) magnitude

Discuss

Answer & Solution

Answer: Option C

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

Force = . . . . . . . .

A) mass × acceleration B) mass × volume C) mass × pressure D) mass × velocity

Discuss

Answer & Solution

Answer: Option A

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

When the direction of the force applied and the direction of movement of the object is perpendicular to each other.

A) Power exercised B) No work done C) Power not exercised D) Work done

Discuss

Answer & Solution

Answer: Option B

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

How would energy be converted while cycling?

A) Potential energy is converted into muscular energy B) The chemical energy is converted into muscular energy then kinetic energy C) Chemical energy is converted into mechanical energy D) Mechanical energy is converted into kinetic energy

Discuss

Answer & Solution

Answer: Option B

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

According to which of the following principles does a rocket works in space?

A) Principle of conservation of momentum B) Principle of conservation of mass C) Principle of conservation of energy D) Principle of conservation of speed

Discuss

Answer & Solution

Answer: Option A

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

In which of the following work is not done-

A) A wind mill raising the water from well B) A donkey put a weight on his back C) Suman is swimming in a pool D) A engine is pulling a train

Discuss

Answer & Solution

Answer: Option B

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

A uniform chain of length 2m is kept on a table such that a length of 60cm hangs freely from the edge of the table. The total mass of the chain is 4kg. What is the work done in pulling the entire chain on the table?

A) 12J B) 7.2J C) 3.6J D) 1.2J

Discuss

Answer & Solution

Answer: Option C

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