Question # 1

The rate of change of momentum of a body falling under gravity is equal to its.

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P.E.

K.E

Weight

Density

Which of the following is not a ferromagnetic materials.

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Iron

steel

Copper

Cobalt

In the equation P = IV cos Theta Cos theta is known as

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Phase angle

Liming angle

Phase

Power factor

A force applied at centre of mass of a body

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Does not produce any torque

Produces torque

Produces acceleration

Produce couple

The first successful quantitative theory of atomic structure was formulate by

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David Bohm

Louis de Broglie

Neil Bohr

J Jj. Thomson

The inductance in a coil plays the same role as

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Inertia plays in machans

torque plays in machines

Energy plays in machines

Momentum plays in machines

The critical angle will be maximum when light travels from

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Glass of air

Water to air

Water to glass

Glass to water

A pendulum vibrates with a time period of 1 s which range of sound is produced by it

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Audible

Infrasonic

Ultrasonci

Super sonic

The rms value of emf in a circuit is given by a factor of.

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0.637

0.7

0.707

1.11

A stone is whirled in a vertical circle at the and of a string when the stone is at the highest position, tension in the string is

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Maximum

Zero

Equal to weight of the stone

Less than weight of the stone.

The resultant of two force 3 N and 4 N making an angle 90 ^o with each other is.

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1 N

3 N

5 N

10 N

The discovery of interference of light was made possible in.

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1801

1901

1825

1925

Hearing damage is possible at sound pressure of

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0 dB

50 dB

130 dB

195 dB

Which one of the following represents an ohm.

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Volt per ampere

Joule per second

Watt per ampere

Joule per coulomb

The first artificially produced nuclear transmutation was accomplished by.

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Curie

Rutherford

Becquerel

Chadwick

The number 0.02 x 10^-8in standard form will be written as.

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2 x 10^-10

2 x 10^-8

20 x 10^-8

20 x 10^-6

Sound wave in air are

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Longitudinal waves

Transvers waves

Electromagnetic waves

Matter waves

Alpha particles emitted from a radioactive material are.

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He nucliei

H -nucliei

Li nucliei

B nucliei

What is the relativistic version of the Schrodinger equation.

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Klein Gordon equation

Laplace equation

Quadratic equation

Binomial equation.

The smooth and steady streamline flow is known as

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Turbulent flow

Laminar flow

Regular flow

Irregular flow

When a ray of light enters from rarer medium to a denser medium its wavelength.

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Increases

Decreases

Remain constant

Vanishes

Which of the following can be used visualize the third law thermodynamics

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Light

Heat

Water

All of these

The first super conductor was discovered by

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Faraday

Lenz

Kamaerlingh Ornes

Oersted

In gases, the charge carriers are.

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Atoms

Molecules

Electrons only

Ions and electrons

Which of the following medium can transmit both transverse and longitudinal waves.

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Solid

Gas

Liquid

Plasma

The steady current which produces the same heating effect in a resistance in a given time as the alternating current does in the same resistance in the same time is called.

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Induced current

Root mean square value of an alternating current

Mean value of alternating current

Electromotive force

The maximum field that a dielectric material can with stand whiteout breaking down is called its.

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Di electric strength

Magnetic strength

Capacity

Resistance

Light from the sun reaches the earth in

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Spherical wave fronts

Cylindrical wave fronts

Plane wave fronts

Packets

An oscillator is basically an amplifier with loop gain

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Zero

Less than unity

More than unity

Infinity

The part of theory of relativity which deals with accelerated bodies is called.

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special theory of relativity

General theory of relativity

Lorentz's theory of relativity

Galilean theory of relativity

Express the quantity 225 x 10^-6 s using prefixes.

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0.225 micro second

2.25 micro second

225 micro second

2,25 neno second

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