Question # 1

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

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Maxwell

Young

Einsten

Hydrogen

Dark fringes are also called as

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Minima

Maxima

Wave front

Ray of light

Symbolically solid angle is represented as

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Sr

rad

0

cd

A force of 100 N makes on angle of 60^owith y axis, its horizontal component is.

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50 N

60 N

70.7 N

86.6 N

Food rich in proteins is:

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potato

grapes

vegetables

bread

The number of significant figures with the increases degree of approximation

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Decreases

Increases

Remains unchanged

None of these

A constant temperature, if pressure of a given mass of gas is halved, then its volume becomes.

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Halve

Doubled

Four time

Constant

Which is the process in which temperature of the system remains constant.

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Adiabatic process

Isochoric process

Isothermal process

Isobaric process

The orbital angular momentum is associated with the motion of a body along

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Straight path

Circular path

Curved path

Along any path

Experimentation and practical verification was fist indroduced by

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The Muslim Scientists

The Greek philosopher

The European scientsts

None of these

On loading the prong of a tuning fork with wax, the frequency of sound.

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Increases

Decreases

Remains same

First increases then decrease

At constant temperature and pressure, if volume of given mass of a gas is doubled then density is.

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Doubled

1/4 original

1/2 of original

Unchanged

[LT-2] is demensional formula for

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Acceleration

Velocity

Force

Momentum

When two waves of same frequency travel in opposite direction, the phenomenon will be

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Diffraction

Stationary waves

Polarization

Interference

Damping is the process in which energy

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Increases

Remains constant

Dissipates

None of these

The power needed to lift a mass of 5000 g to height of 1 m in 2 secnd is

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2.45 watt

24.5 watt

245 watt

2.45 watt

For a rocket , the change in momentum per second of the ejecting gases is equal.

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Acceleration of the rocket

Momentum of rocket

Velocity of rocket

Thrust acting on rocket

The curve representing an adiabatic process is called.

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An adiabatic

An isotherm

Both of these

None of these

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