Question # 1

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

The commercial unit of electrical energy is :

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K Watt

KWH

Horse power

Joule

Work done along a closed path in a gravitational field is:

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Maximum

Minimum

Zero

Unity

The field in which work done is moving body between two points depends upon the path followed is called:

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Conservative filed

Non-conservative field

Electric field

None of these

A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is:

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1.25 J

12.5 J

125 J

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

The power of an electric generating station is expressed in:

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Kilo Jule

Kilowatt-hour

Kilo watt

Watt

Work is a:

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Scalar quantity

Vector quantity

Base quantity

None of these

Tick the conservation force:

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Tension in a string

Air resistance force

Elastic spring

Frictional force

Work is product of:

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Force and velocity

Heat and energy

Force and displacement

None of these

Power is a :

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Vector quantity

Base quantity

Scalar quantity

None of these

When velocity of moving body is doubled, the quantity which is also doubled is its:

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K.E.

Acceleration

Momentum

P.E.

The tidal energy is produced due to rotation of Earth relative to:

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Moon

Sun

Oceans

Water

When a body moves against the force of friction on a horizontal plane, the work done by the body is:

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Positive

Negative

Zero

None of these

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

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0°

90°

180°

None of these

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

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