Question # 1

For an ideal gas, the internal energy is directly proportional to.

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Pressure

volume

Mass

Temperature

When temperature of source and sink of a heat engine becomes equal then the entropy change will be.

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zero

Minimum

Maximum

Negative

Pascal is the unit of

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Pressure

Force

Tension

Weight

The ratio of size of image and size of object is

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Focal length

Magnification

Resolving power

Principle focus

Star moving towards the earth show

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Red shift

Blue shift

Green shift

Yellow shift

Light waves emitted from a source spread in

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Specific direction

All direction

Upward direction

None of these

The direction of angular velocity is determined.

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Left hands rule

Head to tail rule

Right hand rule

General rule

100 radians are equal to.

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57.3^o

75.3^o

573^o

5730^o

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

__ will travel faster than other through an optical fibre.

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Ultraviolet light

Visible light

Infrared light

White light

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

Multimode step index fiber is useful for.

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Long distance

Sort distance

Very long distance

Infinite distance

SI unit of work

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Newton

Walt

Pascal

Joule

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 angle of projection for which its maximum height and horizontal range are equal

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46 ^o

56^o

66^o

76^o

The unit o pressure of gas is

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Nm^-2

Pascal

Atmosphere

All of these

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

The slope of velocity time graph shows

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Total distance covered

Average acceleration

Instantaneous acceleration

Torque

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