Work, Energy and Power MCQ question and answer with solution

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

The water flowing in a hydroelectric power station can run the turbine because it containes.

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

Discuss

Answer & Solution

Answer: Option C

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

When displacement occurs, the work done by the force is considered to be negative.

A) Is perpendicular to the direction of force B) Is in the direction of momentum C) Is in the direction of force D) Is in the opposite direction of the force

Discuss

Answer & Solution

Answer: Option D

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

A boy of 50 kg mass climbs 43 stairs in 10 seconds. If the height of each stair is 15cm then find its power?

A) 337.5W B) 325.5J C) 322.5W D) 322.5ms

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Answer & Solution

Answer: Option C

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

A body has a free fall from a height of 20m. After falling through a distance of 5 m, the body would

A) lose one-fourth of its total energy B) loss one-fourth of its potential energy C) gain one-fourth of its potential energy D) gain three-fourth of its total energy

Discuss

Answer & Solution

Answer: Option B

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

Which of the following is not a characteristic of work?

A) Work has a direction B) For doing work it is necessary to apply a force on an object C) Work has only magnitude D) For work done their should be a displacement of an object

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Answer & Solution

Answer: Option A

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

Which of the following work done does not depend-

A) Applied force B) Mass of object C) Displacement D) The angle between force and displacement

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Answer & Solution

Answer: Option B

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

What is the definition of mass?

A) The mass of an object is directionless. Therefore it is a scalar quantity B) Mass can be determined based on chemical equilibrium C) The mass of an object remains constant at any place and is not affected by the change in height D) The amount of matter contain in an object is called the mass of that object

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Answer & Solution

Answer: Option D

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

The kinetic energy of which particle is maximum-

A) Liquid and Solid B) Solid C) Liquid D) Gases

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Answer & Solution

Answer: Option D

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

Which of the following is not a perfectly inelastic collision?

A) Striking of two glass balls B) A bullet striking a bag of sand C) An electron captured by a proton D) A man jumping onto a moving car

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Answer & Solution

Answer: Option A

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

A snowboard pulled up by a two rope travels at the rate of 5 m/sec up a mountain. If 3000 watt of power is used, what force was applied to it?

A) 50 N B) 100 N C) 600 N D) 15000 N

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