Question # 1

Crests and trough are formed in.

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Longitudinal waves

transverse waves

Stationary waves

Compression waves

the final image obtained by astronomical telescope is.

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Erect

Virtual

Magnified

All of these

The period of the earth is equal to

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one lunar day

One astronomical

One Solar day

The speed of sound in air would become double than ots speed at 10^oC at a temperature of.

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313 ^oC

586 ^oC

859^oC

899 ^oC

The distance covered by wave in 1 sec is

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wavelength

Wave number

Wave speed

Frequency

The relation between the speed and hoop can be written as

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2

4

1/2

1/4

The motion and rest are

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Absolute

Relative

Mutual

All of these

Two waves of same frequency and moving in the same direction produces.

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Interference

Diffraction

Beats

Stationary waves

Blood has density equal to that of

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Mercury

Sodium

Honey

Water

The SI unit of work is

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Newton

Joule

Mol

Calorie

A quantity which indicates the state and direction of a vibrating body is known as

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Time period

Amplitude

Phase

Frequency

The study of fluid dynamics is

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Easy

Complicated

Impossible

None of these

Waves transport energy without transporting

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Matter

Force

Momentum

All of these

In reversible process the entropy of system.

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Remain constant

Decrease

Increase

Becomes zero

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

The relation between linear and angular velocity is

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The direction of angular velocity of along the

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Tangent at that point

Axis of rotation

Radius towards the centre

Radius away from the centre

If an object is placed with in the focal length of a convex lens, its image is formed.

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Real

Inverted

Virtual

Smaller than object

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