Question # 1

The SI Unit of amount of substance is

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Mole

Joule

Volt

Ohm

Light waves emitted from a source spread in

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Specific direction

All direction

Upward direction

None of these

the angular version of F= ma is

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L = 1w

pi = 1a

l = pi a

f = mv/t

In transverse waves the particles of medium vibrate

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Along the direction of wave

Opposite to direction of wave

Perpendicular to direction of wave

Slowly

The direction of null vector can be

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(+) ve

(-) ve

Arbitrary

Zero

In the absence of air resistance the acceleration of a body will be

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Uniform

Variable

Instantaneous

None of these

The ability of a body to do work is called its

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Force

Power

Capacity

Energy

Which one of the followign scientistis made some conributions to geometrical optics

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Plato

Archimedes

Euclid

None of these

The speed of sound in air does not depend upon

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Temperature

Pressure

Density

Medium

The relation between linear and angular velocity is

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A typical rocket consumes fuel about

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40000 Kgs-1

30000 Kgs-1

20000 Kg s-1

10000 Kgs-1

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

The internal energy of a piece of lead when beaten by hammer will.

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Increase

Decrease

Remains constant

Increases and then decrease

Which one of the scientist made some contribution to geometrical optics?

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Phythagoras

Archimedes

Euclid

Plato

The direction of angular acceleration is

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Along the axis of rotation

Perpendicular to the axis of rotation

Opposite to axis of rotation

None of these

Crests and trough are formed in.

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Longitudinal waves

transverse waves

Stationary waves

Compression waves

Stationary waves are generated on a string of high l, if tension is increased , frequency of vibration will

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Decrease

Unchanged

Half

Increases

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

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