Question # 1

The force with which earth attracts a body towards its center is equal to its

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Mass

Weight

Charge

Radius

Latent heat of fusion of water is:

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3.36 x 10¹⁰ Jkg^-1

93.6 x 10¹⁰Jkg^-1

3.36 x 10⁵Jkg^-1

None of these

The value of 'g' on the surface of moon is:

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1.62 ms^-2

10 ms^-2

20 ms^-2

Zero

In which hot liquid can remains hot:

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Glass

Lead

Thermos

Hot pot

Which surface is bad emitter:

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White surface

Black surface

Coloured surface

Silver surface

The product of force and distance is :

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Force

Work

Torque

Nil

1 KW (kilo Watt) is equal to:

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10² W

10³ W

10⁵ W

10⁶W

When a body is lifted through height h, the work done on it appears in the form of its

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Kinetic energy

Potential eneger

Elastic potential energy

Geothermal energy

The orbital speed of a low orbit satellite is:

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Zeri

8 ms^-1

800 ms^-1

8000 ms^-1

Friction causes _____________

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Heat

Light

Mass

Weight

Where there is no air the atmospheric pressure is:

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Zero

101300 Pa

7 nm Hg

1000 Nm^-2

On heating Air becomes.

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Heavier

Lighter

Remain same

None

S.I unit of gravitational field strength is:

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Nkg

Nkg^-1

Nkg^-2

Nkg^-3

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