Question # 1

If the velocity of body increases with time, the acceleration will be.

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Negative

Uniform

Positive

Variable

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

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Kinetic energy

Potential energy

Elastic energy

Geothermal energy

If the distance is doubled between two masses. The gravitational force will decrease:

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4 times

2 times

One forth

One third

_____________ is related to earth attractive force.

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Centre of gravity

Acceleration

Velocity

Nil

Hydraulic press in works on:

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Pascal's law

Hook's law

Archimedes law

Principle of floatation

A boy jumps out of a moving bus. There is danger for him to fall

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Towards the moving bus

In the direction of motion

away from the bus

Opposite to the direction of motion

Thermos flask, is used to maintain:

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Heat

Temperature

Density

Pressure

Value of g on mercury is ___________ ms^-2.

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25.94

3.7

8.87

1.62

If the object is at rest to T .............. W.

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=

=/

<

>

The ratio of output to input is called:

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work

Efficiency

Force

All of above

The temperature of sun surface is:

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5000°C

4000°C

6000°C

7000°C

In measurement 1.032 numbers of significant figure are.

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1

2

3

4

Plasma is .......... state of matter .

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Molecular

Fourth

Smallest

Nil

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