Question # 1

Product of mass and velocity of a body is called.

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Torque

Force

Work

Momentum

Independent quantities are taken on

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- x - axis

x -axis

-y-axis

y-axis

The numebr .00580 is scientific notation is.

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5 .80 x 10⁵

5 .80 x 10^-4

5 .80 x 10^-3

5 .80 x 10^-2

The mathematical form of law of gravitation is:

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F = GMe m/Re2

F = Gm1m2/r2

F = GMem1/Re2r2

None

The quantity of heat absorbed by the body depends upon:

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Colour of surface

Nature of surface

Shape of surface

Both a and b

Convection of heat is the process of heat transfer due to the:

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Random motion of molecules

Downward movement of molecules

Upward movement of molecules

Free movement of molecules

Racing cars are made stable by :

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Increasing their speed

Decrease their mass

Lowering their center of gravity

Decreasing their width

Metals are good conductor of heat due to:

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Free electrons

Reamain same

Small size of their molecules

Rapid vibration of their atoms

Atmospheric pressure acts in:

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upward direction

Down ward direction

Opposite of force

All direction

An ideal system gives output:

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50%

60%

80%

100%

The force which opposes the motion is called.

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Momentum

Friction

Inertia

Tension

The Mars has value of g

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25.94 m/sec2

3.73 m/sec2

1.62 m/sec2

8.87 m/sec2

If velocity of a body becomes half that its energy K.E will be decrease to:

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Zero

Half

Double

4 Times

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