Question # 1

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 SI unit of force is.

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Dyne

Joule

Volt

Newton

Pi radian is equal to.

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0^o

90^o

180^o

57.3^o

The frictional force is

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Conservative force

Non conservative force

Electric force

Magnetic force

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

When two waves having same frequency traveling in same direction combine, phenomenon is called

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Wave motion

Combination of waves

Interference

Diffraction

Moment of inertia is measure din

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Kg m2

Kg m-2

Rad s-1

Joule second

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

Which one of the following is into directed along the axis of rotation

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Angular acceleration

Angular momentum

Centripetal acceleration

Angular displacement

A convex lens acts as diverging lens if the object is placed at

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F

2F

Between F and 2 F

Within the F

The time rate of change of angular displacements called.

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Linear velocity

Linear speed

Angular velocity

Angular speed

The shape of trajectory of short range projectile is

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Straight line

Circle

Elliptical

Parabolic

Significant figures in 0.000546

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1

4

3

5

Mercury is used as a thermometric substance because

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It is opaque

Does not stick to glass

Has low specific heat

All of these

A heat engine operates between the temperature 1000 K and 400 K, Its efficiency is.

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100%

70%

60%

50%

If an object lies at focus point F in front of a converd lens, its image is formed at.

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2F

F

3F

Infinity

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

The speed of sound increases with the increase of in

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Pressure

Volume

Temperature

Density

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