Question # 1

Which of the following affects evaporation?

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Temperature

Surface area of the liquid

Wind

All of the above

By dividing displacement of a moving body with time, we obtain

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Deceleration

Acceleration

Speed

Velocity

The kinetic energy of the body of mass 1000 kg moving a speed of 20 ms^-1 will be:

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2 x 10² J

2 x 10³J

2 x 10⁵J

2 x 10⁸J

At sea level , Atmosphere pressure is:

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101,300 Pa

101,400 Pa

101,500 Pa

101, 600 Pa

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

If 'm' is a mass of a body and 'c' is its specific heat, then its heat capacity is a given by

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m/c

c/m

mc

mc2

The number 275.00 consists of significant figures.

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4

3

2

5

The S.I unit of work is :

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J

N

Kg

m

A ball of mass 1 kg moving with velocity 2 ms-1, Its momentum will be

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1 Ns

2 Ns

0.5 Ns

4 Ns

Coloured surface is a

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Best emitter

Good emitter

Bad emitter

Wrost emitter

Which parameter remain same every where?

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Force

Mass

Weight

Velocity

If we increase the length of spanner the torque produced will be

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Increased

Decreased

Constant

Zero

In Einstein's mass-energy equation ,c is the

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Speed of sound

Speed of light

Speed of electron

Speed of Earth

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