Question # 1

The work done in gravitational field

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Depend upon the path

Does not depend upon the path

(+)ve

Zero

Which one is renewable source of energy.

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Coal

Uranium

Biomass

Natural gas

Identity the non conservative force among the following.

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Frictional force

Electrical force

Gravitational force

Elastic restoring force

The SI unit of power is

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Joule

Newton

Watt

Kilowatt

The frictional force is

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Conservative force

Non conservative force

Electric force

Magnetic force

Which one is a conservative force

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Elastic spring force

Air resistance

Frictional force

Tension in the spring

Work is a

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Scalar quantity

Vector quantity

Basic quantity

None of these

The ability of a body to do work is called its

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Force

Power

Capacity

Energy

_______ is bio fuel

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Water

Petrol

Ethanol

Oil

If velocity 'v' of an object is double, then K.E. because.

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Remain same

Sixteen times

Double

Four times

Watt -m2 is the unit of

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Energy

Intensity

Power

Work

When distance is plotted against the force, it is taken along

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x-axis

y-axis

z-axis

None of these

Original source of energy for biomass is

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Earth

Star

Moon

Sun

A body of mass 1.0 Kg dropped from the top of a tower of highest 50 m, what will be its K.E. 10 m below the top

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400 J

490 J

49 J

98 J

Work is negative when angle between F and d is

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45^o

₀^o

90^o

180^o

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