Question # 1

Area under the force displacement graph gives

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Power

Work

Heat

Energy

Work is always done on a body when:

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A force acts on it

It moves through certain distance

None of A and B is correct

Both A and B is correct

A field in which the work done in moving a body along closed path is zero is called

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Nuclear Field

Conservative field

Gravitational field

Non-conservative field

Work is a scalar product of

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Force, Velocity

Velocity, Displacement

Force, Displacement

Force, Momentum

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. The angle which the force makes the direction of motion will be:

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60°

90°

30°

0°

The space around the earth in which its gravitational force acts on a body is called

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Electric Field

Gravitational field

Magnetic field

Conservative field

The ultimate source of money sources of energy is:

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Sun

Air

Water

Petroleum

The types of mechanical energy is/are:

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Kinetic energy

Potential energy

Both of these

None of these

Work is always done on a body when:

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A force acts on it

It moves through certain distance

None of A or B is correct

Both A and B is correct

Work is a always done on a body when

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A force acts on it

It moves through certain distance

None of A or B is correct

Both A and B are correct

The work done by a force, keeping an object in circular motion with constant speed is:

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Zero J

1 J

0.1 J

0.01 J

Work done by the force of friction is always

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Positive

Zero

Negative

Maximum

Work is a Quantity

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Vector

Scalar

Non-physical

None of these

Work done is maximum when angle between force and displacement is:

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0°

90°

180°

None of these

Escape velocity from surface of Moon as compared to that from Earth surface is:

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Greater

Smaller

Equal

None of thes

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Physics ECAT Pre Engineering Chapter 4 Work and Energy Online Test MCQs With Answers

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