Question # 1

When two protons are brought are brought closer potential energy of both of them:

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Increases

Decreases

Remains same

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

Infinite work

Which force is not a conservative force:

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Frictional force

Gravitational force

Electric force

Elastic spring force

The commercial unit of electrical energy is :

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K Watt

KWH

Horse power

Joule

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

Work has a dimension as that of:

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Torque

Angular momentum

Linear momentum

Power

Most of the geysers occur in:

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Volcanic regions

Magnetic regions

Northern region

None of these

A labourer carrying a distance a load on his head moves from 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

Power is a :

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Vector quantity

Base quantity

Scalar quantity

None of these

If we draw a graph between d(along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis then area under this straight line represents:

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Power

Work

Pressure

None of these

A solar cell is made from:

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Iron

Silicon

Germanium

Copper

Work is a Quantity

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Vector

Scalar

Non-physical

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 work done in moving a body between two points in a conservative field is independent of the

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Direction

Force applied

Path followed by the body

Power

Which of the following type of force can do no work on the particle on which it acts:

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Frictional force

Gravitational force

Electric force

Centripetal force

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

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