Question # 1

The term in Bernoulli's equation has the same unit as

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Work

Volume

Pressure

Force

2 radian = ____

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2 m

4 m

57.3 m

114.6 m

According to Huygen's principle the points on primary wave front can be considered as

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Secondary wavelets

Ray of light

Source of light

None of these

The units of magnifying power of microscope or telescope are.

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Metre

m^-1

dioptre

No unit

The horizontal range of a projectile of 30^owith horizontal is same at an angle.

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40^o

45^o

90^o

60^o

The trajectory of a projectile is.

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Circle

Parabola

Hyperbola

Straight line

For working of heat engine, there must be

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A source

A sink

Ether of these

Both of them

Inertia may expressed in

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Kg

Newton

Watt

Joule

A typical diffraction grating has certain number of lines per centimeter whose range is.

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40 to 50

400 to 5000

400 to 500

4000 to 5000

The amplitude of a vibrating body at resonance in vacuum is

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Minimum

Maximum

Zero

Infinite

Which one is renewable source of energy.

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Coal

Uranium

Biomass

Natural gas

Direction of a vector in space requires

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Two axis

Three axis

Four axis

Both a and b

The pitch of sound deepens upon

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Intensity of sound

Loudness of sound

Wavelength of sound

Frequency of sound

Multimode step index fibre is useful for

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Long distances

Short distances

Better quality

Low price

A ball is thrown up vertically, it takes 3 sec to reach maximum height. Its initial velocity is.

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10 ms-1

12.2 ms-1

15 ms-1

29.4 ms-1

Which of the following is evidence of wave nature of light

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Interference

Diffraction

Polarization

All of these

The collision between the gas molecules is

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Elastic

Inelastic

Both a and b

None of these

If heat is added to a system, then its entropy will.

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Increases and positive

Decrease and positive

Increases but negative

Decreases but negative

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