Question # 1

In rotational motion the torque is equal to rate of change of

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Angular velocity

Linear momentum

Angular momentum

Angular acceleration

The optical fibre is covered for protection by

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Glass jacket

Plastic jacket

Steel jacket

Diamond jacket

If the time period of simple pendulum is 2 seconds its frequency will be.

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1 Hz

0.5 Hz

1.5 Hz

2 Hz

The dimension of viscosity are

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[M2L-2T2]

[M-1LT-1]

[M-1L-1T]

[ML-1T-1]

A set of frequencies which are multiples of the fundamental frequency are called.

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Doppler effect

Nodal frequencies

Beat frequencies

Hamonics

The ideal gas law is.

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PV =NVk

P = NkT

PV =nRT

P=nRT

The speed of sound in air does not depend upon

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Temperature

Pressure

Density

Medium

The fringe spacing in a double slit experiment can be increased by decreasing.

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Wavelength of light

Width of slits

Slit separation

Distance between the slits and the screen

__ will travel faster than other through an optical fibre.

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Ultraviolet light

Visible light

Infrared light

White light

Rate of change of velocity is called

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Speed

Acceleration

Displacement

Torque

The value of a time period of allow flying satellite is

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1 year

84 minutes

28 hours

1 day

A 2 meter of high tank is full of water. If a hole appears at its middle, then the speed of efflux is.

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4.4 ms-1

10 ms-1

6.2 ms-1

20 ms-1

The light energy travels in space as waves was firstly proposed by

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Maxwell

Young

Einsten

Hydrogen

The speed of sound increases with the increase of in

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Pressure

Volume

Temperature

Density

The collision between the gas molecules is

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Elastic

Inelastic

Both a and b

None of these

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

The resultant of two vectors having magnitude 12 N and 8 N can not be

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2 N

20 N

10 N

16 N

The potential energy to the molecules of an ideal gas is considered to be.

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Maximum

Zero

1/2 kx²

1/2 kx

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