Question # 1

A diatomic gas molecules has

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Translational energy only

Rotational energy only

Vibrational energy only

All translational, Rotational and vibrational energy

when a ball is throng straight up, the acceleration at its highest point is.

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Upward

Down ward

Zero

Horizontal

The internal energy of a piece of lead when beaten by hammer will.

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Increase

Decrease

Remains constant

Increases and then decrease

Bending of light around the edges of an obstacle is called.

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Refraction

Polarization

Interference

Diffraction

100 radians are equal to.

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57.3^o

75.3^o

573^o

5730^o

In blue light is used as compare to red light then fringe spacing.

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Increase

Decreases

Remain same

Becomes zero

The distinguish between transverse and longitudinal wave_______ is used.

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Refraction

Interference

Diffraction

polarization

Time period of simple pendulum only depends on

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Mass

Amplitude

Density

Length

Soap film is sunlight appears coloured due to.

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Dispersion of light

Diffraction of light

Scattering of light

Interference fo light

The motion and rest are

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Absolute

Relative

Mutual

All of these

One revolution is equal to.

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90^o

180^o

360^o

270^o

The equations of motion hold good for

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Variable acceleration

Uniform acceleration

Centripetal acceleration

All of these

The types of optical fibres are

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Three

Four

Five

Six

If velocity 'v' of an object is double, then K.E. because.

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Remain same

Sixteen times

Double

Four times

The waves used in radar speed trap are

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Longitudinal

Sound wave

Micro waves

Matter waves

A body has P.E. = mgh, when it is at height 'h' from the ground. At the point at the distance 'x' below from the top its P.E. with

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mgh

mgx

mg(x-h)

None of these

The collision between the gas molecules is

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Elastic

Inelastic

Both a and b

None of these

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11th Class Part 1 Physics Test Online MCQs With Answers

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