Question # 1

The unit of π is:

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N

m

s

None

Larger number of slots are made in radiators to increase:

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Surface temperature

Surface area

Both A and B

Nonr

__________ expands on heating?

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Matter

Plasma

Gas

Solid

The value of latent heat of vaporization of water is:

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2.26 x 10⁶ Jkg^-1

2.29 x 10⁵Jkg^-1

2.26 x 10^-6Jkg^-1

3.29 x 10^-5Jkg^-1

In large building central heating system worms on the principle of

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conduction

convection

radiation

waves

Metals are good conductors of heat due to :

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Free electrons

Big size of molecules

Small size of molecules

None of these

Least count of digital vernier callipers is.

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0.01 cm

0.01 mm

0.1 mm

0.1 cm

At sea level, the atmospheric pressure is about.

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101320 Pa

101300 Pa

10110 Pa

10112 Pa

Rate of change of momentum is equal to:

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Mass

Torque

Weight

Force

Wood, cork,cotton, wool , rubber are the examples of:

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Conductor

Thermal conductor

Insulator

Both a & b

The rage of change of momentum is equal.

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Mass

Force

Weight

None

A body possesses if it is capable to do work:

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Energy

Power

Force

All

The weight of a body is 100 N its weight in deep space is :

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100 N

50 N

25 N

0 N

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