Question # 1

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

The unit of velocity and speed is.

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ms

ms^-2

ms^-1

ms-3

Action and Reaction are always on:

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Same body

Different bodies

Any body

None of these

Worst absorber of heat is:

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Dull black surface

Coloured surface

Shinning silvered surface

White surface

_____________ is centre from which its mass is equally distributed:

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Cebtre of mass

Centre of gravity

All of above

None

Kinetic and potential energy are the kinds of energy:

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Chemical

Nuclear

Light

Mechanical

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

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Deceleration

Acceleration

Speed

Velocity

Ice at ............ °C is more effective in cooling.

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0

-1

-2

-3

At sea level height if mercury is:

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1000 cm

10 cm

1m

76 cm

A force of 200 N is making an angle of 30°. What is horizontal component?

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173.2 N

100 N

600 N

None of these

Friction causes _____________

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Heat

Light

Mass

Weight

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

Forces on doubled arm spanner are called.

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Torque

Couple

Moment of force

Momentum arm

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