Question # 1

The earth also completes its one revolution about its axis in.

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1 Hours

6 Hours

13 Hours

24 Hours

If heat Q flows in time 't' through some metal then rate of flow of heat is defined as

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Flow of heat = 2Qt

Flow of heat = Q/t

Flow of heat = t/Q

Flow of heat = Qt

S.I unit of force is:

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N

Ns

s

None

Kilowatt - hour is unit of _____________

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Power

Energy

Work

K.e

Which one of the following converts light energy into electrical energy:

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Electric Bulb

Electric Generator

Photocell

Electric generator

Momentum is quantity

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Scalar

Vector

Base

All

The mathematical form of law of gravitation is:

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F = GMe m/Re2

F = Gm1m2/r2

F = GMem1/Re2r2

None

Unit of moment arm (L) is:

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Meter

Mole

Newton

Nm

If radius of circle is doubled then centripetal acceleration becomes:

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Doubled

Three times

Four times

Half times

Walking on earth is the example of which law?

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First law

Second law

Third law

Law of momentum

Water on cooling below 4 ^oC begins to:

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Expand

Contract

Boils

None of these

According to law of conservation of energy increases K.E is equal to:

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Increase P.E

Decrease P.E

Decrease K.E

None of these

The velocity of freely falling bbodies moving upward.

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Decreases

Increases

Constnat

zero

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