Question # 1

Which one of the following is into directed along the axis of rotation

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Angular acceleration

Angular momentum

Centripetal acceleration

Angular displacement

When the amplitude of a wave become double, its energy becomes

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One half

Two times

Three times

Four times

Stars moving away from Earth show a

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Green shift

Blue shift

Red shift

Yellow shift

If the temperature of a gas is constant then <1/2 mv2> of the molecules of gas will be.

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Constant

Zero

Increase

Decrease

Physical quantiaties are divided into

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Two Categories

Six categories

Three categories

None of these

A frame of reference stationed at the earth is an

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Inertial frame

None internal frame

Accelerated frame

Laboratory frame

Temperature of a gas is increased from 27 oC to 127 oC. The ratio of its mean K.E. will be

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3/4

9/16

4/3

10/9

The basic units in system international units are

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Theree

Seven

Five

Two

The angle of projection for which its maximum height and horizontal range are equal

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46 ^o

56^o

66^o

76^o

System Intenational was established in

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1967

1960

1971

1940

Cloud formation in atmosphere is an example of.

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Isothermal process

Isochoric process

Adiabatic process

Isobaric process

Direction of angular acceleration is always along

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x-axis

y -axis

z-axis

The axis of rotation

Centripetal force perform

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Maximum work

Minimum work

Negative work

No work

Before the launch of a rocket the mass of fuel of the rocket is approximately consists of.

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60%

50%

80%

100%

The efficiency of diesel engine is about

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25 % to 30%

35% to 40%

40% to 50%

50% to 60%

In order to produce beats, the two sound waves should have.

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The same amplitude

Slightly different amplitude

The same frequency

slightly different frequencies.

The work done will be maximum when angle between F and d.

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180^o

0^o

90^o

60^o

More details of an object can be seen with a microscope by using

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Green light

Red light

Yellow light

Blue light

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