Question # 1

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 has the dimension as that of:

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Torque

Angular momentum

Linear momentum

Power

The commercial unit of electrical energy is :

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K Watt

KWH

Horse power

Joule

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

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Nuclear field

Conservative field

Electric field

Gravitational field

Which of the following is not a unit of power:

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J-sec

Watt

N m/sec

Horsepower

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

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Maximum

Minimum

Zero

Unity

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 consumption of energy by a 60 W bulb in 2 minutes is:

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2 watt-hour

120 watt-hour

30 watt-hour

None of these

1 J = ________?

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10⁷erges

10^-7erges

10⁵erges

10^-5erges

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

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

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0°

90°

180°

None of these

The dimensions of work

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[MLT^-1]

[MLT^-2]

[ML²T^-2]

[MLT]

When a wall is pushed by a person very strongly, he has done:

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Maximum work

Zero work

Positive work

Negative work

Work is product of:

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Force and velocity

Heat and energy

Force and displacement

None of these

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

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Nuclear filed

Conservative field

Gravitational field

Non-conservative field

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

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