Question # 1

Such substance which undergo plastic deformation until they break are known as.

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Diatomic substances

Monoatomic substances

Ductile substances

Brittle substances

Bernoulli's equation is Applica table to points

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In a steady flowing liquid

In a streamline

In a straight line perpendicular to steamline

In any non viscous liquid

In the absence of air resistance all objects regardless their weights, fall with

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Same velocity

Different velocity

Same acceleration

Different acceleration

A convex lens of focal length 6 cm to be used to from a virtual image three times the size of the object Where must the lens be placed.

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1 cm

2 cm

3 cm

4 cm

Telecommunication by Optical fibers is done by

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Single mode step index fibre

Multimode step index fibre

Multimode graded index fibre

All of the above

A direct vision spectroscope is better than a prism spectrometer because it helps in

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Observing the spectrum without a source

Observing the spectrum perpendicular to a source

Observing the spectrum in line with the source

all of the above

Identify the irreversible process

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Explosion of a bomb

Slow expansion of a gas

Slow compression of a gas

Slow compression of an eleastic spring

who gave the law of equipartition.

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Maxwell

Carnot

Claussius

Boltzmann

Doppler's effect can be applied to.

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Light wave only

sound wave only

Both light waves and sound waves

Study various features of a wave

The SI unit of current gain is.

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Ampere

Ampere metre

Ampere volt

It has no unit

Lenses are commonly made of.

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Glass only

Plastic only

Glass and clear plastic

Aluminium

Kinetic and potential energies are

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Not inter convertible

Inter convertible

Two forms of torque

Not related with each other

When a force is applied on a body several effects are possible which of the following effect could not occur.

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The body speeds up

The body changes direction

The pressure on the body increases

The mass of the body decreases

A bodybuilders uses a chest expander with five springs it takes a force of 20 N to Pallone spring out by 15 cm how much force will be needed to extend the expander by 15 cm.

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50 N

75 N

150 N

1000 N

What type of process is the Carnot's cycle.

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Reversible

Irreversible

Neither reversible nor irreversible

May be reversible or irreversible

Which of the following is defined as the amount of heat required to raise the temperature of 1 g of water by 1 ^oC

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Joule

BTO

Electron volt

Calorie

The wave nature of light was proposed by

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Thomas Young

Fresnel

Maxwell

Huygen

Which pair of the following forces has a resultant force of 2 N.

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1 N and 1 N

1 N and 3 N

1 N and 2 N

2 N and 2 N

A person suffering from short sighted ness uses

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Concave lens

Convex mirror

Convex lens

Concave mirror

A particle executing simple harmonic oscillations of frequency 100 Hz has an amplitude of 0.1 cm The velocity amplitude of the particleis.

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20 micro cm s-1

10 micro cm s-1

20 cm s-1

19 cm s-1

The phenomenon is which the wavelength of scattered X-rays is larger than the incident X-rays is known as.

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Zeeman's effect

Photoelectric effect

Compton's effect

Annihilation of matter

Which of the following materials has highest magnetic suscaptibility.

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Uranium

aluminium

Platinum

Sodium

Potential of earth's surface is.

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Negative

Positive

Zero

Infinite

The absorption of X-rays in a given material follows.

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A parabola path

Is straight line

An exponential curve

A circle

In a photocell, certain metals emit electrons for

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Visible light

X-rays

Infrared light

Ultraviolet light

A body moves with velocity of 2 x 10⁶ m s-1 its relativistic mass becomes

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Zero

Unity

Double of its rest mass

Infinity

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.

The output of a generator which uses a split ring commutator is.

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sinusoidal A.C. wave

Pulsating D.C. wave

Constant D.C Voltage

Linerly increasing voltage.

The sensitivity of the galvanometer can be increased by increasing the

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Number of turns of the coil

Area of the coil

Strength of the magnetic field

All of the above

The circular motion of a particles with constant speed is.

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Periodic and SHM

Periodic but not SHM

SHM and not periodic

Neither periodic nor SHM

Charge to mass ration of an electron is determined by using the relation.

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e/m = B/rv

e/m = r/vB

e/m = V/Br

e/m = v/r

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