Question # 1

Compton's effect was presented in.

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1921

1923

1931

1933

The resistance of a coil changes directly with

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The current of A.C.

The frequency of A.C

The inductance

Both B and C

What should be the shape of an ideal thermometer.

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Sphereical

Cubical

Cylindrical

Rectangular

What is the relativistic version of the Schrodinger equation.

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Klein Gordon equation

Laplace equation

Quadratic equation

Binomial equation.

Laser light is considered to be coherent because it consists of.

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Many wavelengths

Uncoordinated wavelengths

Coordinated waves of exactly the same wavelength

Divergent beams

Which one fo the following is based on the diffraction and repulsion of electric charge.

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Capacitor motor

Transformer

Induction motor

synchronous motor

In fission reaction, heavy water is used as a

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Coolant

Moderator

Heat exchanger

Controller of reaction rate

A torch bulb uses a 3 V supply and makes a current of 0.2 A It is switched on for one minute How much electrical energy is used.

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0.6 J

12 J

24 J

36 J

When a fluid in a cylinder expands through a distance 'd' against a piston of area 'A' which is exerting a constant pressure 'P' the work done is equal by.

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PAD

PA/d

Pd/A

Pd/A2

Any transparent medium bounded by one or two spherical surfaces is called

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Prism

Lens

Plane mirror

Grating

Soap cleans the dirty clothes because.

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Its chemical constituents are changed

Itr increases the surface tension of its solution with water

It increases the surface tension of its solution with water

It is less dense than that of water

A choke coil is a coil with

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Low inductance and low resistance

Low inductance and high resistance

High inductance and low resistance

Low inductance and negligible resistance

Which quantity provides a quantitative measure of disorder.

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Entropy

Enthalpy

Randomness

Chaos

What is an elementary particle, the basic unit of light and all other form of electromagnetic radiation.

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Phonon

Photon

Neutron

Proton

The amplitude of a vibrating body placed in a resistive medium.

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Increases exponentially with time

Decreases exponentially with time

Remains constant with time

Cannot be observed

The current passing across a p-n junction due to minority charge carriers is called

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Reverse current

Forward current

Leakage current

Both a and b

Magnetic moment is a

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Scalar

Vector

Phasor

Tensor

If the pressure of a gas is doubled, then its thermal conductivity will

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Increases

Decreases

Remain constant

Be zero

Which of the following is an example of induced magnetism.

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A compass needle pointing north

A north pole attracting iron filings

A northpole repelling a north pole

The coil of a motor turning in a magnetic field.

A geostationary satellite covers

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100 ^o of longitude

120 ^o of longitude

130 ^o longitude

140 ^o of longitude

Object may acquire an excess or deficiency of charge by

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Rubbing them together

Grounding them

Applying coulomb's principle

Shielding them

A body in equilibrium may not have

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Velocity

Momentum

Acceleration

K.E

When a transverse wave is reflected on going from a more dense to a less dense medium.

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There is no phase shift

There is a 180 ^o phase shift

There is a phase shift of 360 ^o

A crest is transformed to a trough

The Circular motion of a particle with constant speed is.

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Periodic and SHM

Periodic but not SHM

linear and SHM

Neither periodic nor SHM

What is the range of values of power factor.

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0 to -1

0 to +1

0 to 2

2 to 3

Law of increase of entropy is a result of

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First law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

Zeroth law of thermodynamics

X-rays eject electrons from matter by

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Pair production

Pair annihilation

Compton effect

Photoelectric effect

On which parameter internal energy of an ideal gas depends upon.

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Volume

Mass

Pressure

Temperature

When wind blows in the same direction in which the sound travels, the sound velocity

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Decreases

Increases

Remains unchanged

Becomes zero

The particles equal in mass or greater than protons are called.

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Mesons

Bosons

Baryons

Nucleons

The magnitude of the resultant of two equal forces is equal to either to the force What is the angle between the two forces

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0 ^o

120 ^o

60 ^o

180 ^o

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