Question # 1

Power is a :

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Vector quantity

Base quantity

Scalar quantity

None of these

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

Most of the geysers occur in:

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Volcanic regions

Magnetic regions

Northern region

None of these

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

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+5 X 10¹J

+5 X 10²J

+5 X 10³J

+5 X 10⁴J

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

If force and displacement are in opposite direction, the work done is taken as:

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Positive work

Negative work

Zero work

Infinte work

The work done moving a body between two points in a conservation field is independent of the:

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Direction

Force applied

Path followed by the body `

Power

The work done in moving a body between two points in a conservation field is independent of the:

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Direction

Force applied

Path followed by the body

Power

Work is a Quantity

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Vector

Scalar

Non-physical

None of these

The commercial unit of electrical energy is :

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K Watt

KWH

Horse power

Joule

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

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0°

90°

180°

None of these

The work done on the body will be zero if:

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No force is applied on the body

Force is applied but no displacement

Angle between F(force) and d(displacement) is 90°

All of these are correct

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

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Zero J.

0.1 J

1 J

0.01 J

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

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Conservative field

Non-conservative field

Electric field

None of these

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

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0°

30°

60°

90°

Work has the dimension as that of:

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Torque

Angular momentum

Linear momentum

Power

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