Question # 1

Tick the conservative force

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Tension in a string

Air resistance

Elastic spring

Frictional force

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

Work is a:

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Scalar quantity

Vector quantity

Base quantity

None of these

The power of an electric generating station is expressed in:

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Kilo Jule

Kilowatt-hour

Kilo watt

Watt

Most of the geysers occur in:

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Volcanic regions

Magnetic regions

Northern region

None of these

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

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mgh

Its wight

Weight X height

Zero

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

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0°

90°

180°

None of these

Work is a Quantity

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Vector

Scalar

Non-physical

None of these

Work is a:

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Scalar quantity

Vector quantity

Base quantity

None of these

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

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Minimum Work

Maximum Work

Zero Work

Negative Work

Work has the dimension as that of:

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Torque

Angular momentum

Linear momentum

Power

The work performed on an object does not depend on

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Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

The space around the earth within which it expects a force of attraction on other bodies is known as:

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Nuclear field

Conservative field

Electric field

Gravitational field

Work has the dimensions as that of

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Torque

Angular momentum

Linear momentum

Power

Which of the following is not a unit of power:

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J-sec

Watt

N m/sec

Horsepower

The amount of coal used since 1945 up till now as compared to that used in the whole of history before that is

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Much more

Very small

No amount at all

None of these

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

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