Question # 1

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°

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

Work done is lowering the bucket into the well is:

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Zero

Positive

Negative

None of these

Work is a:

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Scalar quantity

Vector quantity

Base quantity

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

The types of mechanical energy is/are:

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Kinetic energy

Potential energy

Both of these

None of these

The energy stored int he water of the dam is:

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Electric energy

Kinetic energy

Potential energy

None of these

The tidal energy is due to gravitational pull of :

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sun

moon

Mars

None of these

If one newton force acts on a body and displaces the body through 1m work done on body is

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1 dyne

1 joule

1KJ

1 Watt

Watt x second is unit of:

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Force

Work

Power

None of these

The value of escape velocity of Earth planet comes out to be:

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11 m/sec

11 km/sec

11 km/hour

11 cm/sec

The unit of work in CGS system is

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Joule

Erg

Dyne

Watt

Work done on a body by gravity in lifting it up to certain height is

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Maximum

Minimum

Zero

Negative

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 is product of:

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Force and velocity

Heat and energy

Force and displacement

None of these

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