Question # 1

The unit o pressure of gas is

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Nm^-2

Pascal

Atmosphere

All of these

If the slope of the velocity time graph remain constant then body is moving with.

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Uniform velocity

Negative variable acceleration

Variable acceleration

Uniform acceleration

The focal length of a concave lens is always

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+ve

-ve

Zero

None of these

Multimode graded index fibre has a core whose diameter range lie from.

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5 to 50 micro meter

50 to 100 micro meter

40 to 1000 micro meter

50 to 10,000 micrometer

Wavelength of a wave for closed pipe having length 'l' in the fundamental mode is.

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2 l

1/2

4 l

l

The distance between two consecutive wave front is equal to

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One wave length

Two wave length

Half wave length

Three wave length

Which material has maximum viscosity

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Glycerin

Plasma

Methanol

Water

An oscillating mass-spring system produces

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Sound waves

Electromagnetic waves

Light waves

Periodic waves

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

Multimode step index fibre is useful for

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Long distances

Short distances

Better quality

Low price

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

The frictional effect between the different layers of fluid is called

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Terminal velocity

Stock's law

Viscosity

Surface tension

The law of conservation of energy is the basis of.

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Stream line flow

Equation of continuity

Bernoulli's equation

Venture relation

The unit of solar light inversely is

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Watt

kW m-2

Watt m-2

1 m2

Food rich in proteins is:

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potato

grapes

vegetables

bread

The dimensions of angular velocity are

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[LT-1]

[LT-2]

[T-1]

[L-1T-1]

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

The profile of periodic waves generated by a source executing S.H.M is represented by a.

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Circle

Sine curve

Tangent curve

Cosine curve

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