Question # 1

The most convenient unit for energy at the atomic level is.

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Joule

Watt second

Newton metre

Electron volt

Mostly widely used types of gas LASER are.

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Neon

Argon ion

Helium

All of these

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

Which particle has zero charge and zero rest mass.

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Neutron

Proton

Electron

Photon

The exitance of more than one distinct state with the same energy is called.

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Exigency

Degeneracy

Normally

Emergency

Which of the following is used for reducing spherical aberrations in optical instruments.

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Plano convex lens

Concave lens

Spherical mirrors

Piane mirrors

Amorphous solids are also called.

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Crystalline solids

Glassy solids

Polymeric solids

Polymers

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

Kinetic and potential energies are

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Not inter convertible

Inter convertible

Two forms of torque

Not related with each other

Any substance that can flow is a

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Solid

Gas only

liquid only

Fluid

The focal length of a thin converging lens is 10 cm What is the maximum distance from the lens that the object can be placed so the lens acts as a magnifying glass.

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5 cm

10 cm

15 cm

20 cm

If slope of velocity time graph gradually decreases, then a body is said to have

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Negative acceleration

Positive acceleration

Uniform velocity

Variable velocity

Transistors with various combinations are widely used as switches in.

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electric generators

Rectificers

Amplifiers

Computers

What is the degree of magnetization of a material.

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Susceptibility

Ablitity

Retentivity

Capacity

An oscillator is basically an amplifier with loop gain

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Zero

Less than unity

More than unity

Infinity

Why FET amplifiers are called voltage controlled devices.

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Input is a current signal

Output is a current signal

Input is a voltage signal

Output is a voltage signal

On which of the following the object size as perceived by eye depends upon.

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Actual size of the object

Aperture of the pupil

Object distance from the eye

Size of the image formed on the retina

The law of equation of energy is applicable to the system whose constituents are.

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At rest

In orderly motion

in random motion

Moving at constant speed

The basic circuit element is a D.C. circuit is

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An inductor

A resistor

A capacitor

A battery

The molecular weight of D2O is

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16

18

20

24

Which of the following can be used to calculate electrical power.

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Current x resistance

Potential difference x current

Potential difference / current

Potential difference /resistance

In comparison with the electrostatic force between two electrons the electrostatic force between two protons is.

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Zero

Smaller

Greater

Same

Which are different types of emission spectrum

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Continues spectrum

Line spectrum

Band spectrum

all of the above

Radioactivity is the phenomenon associated with the.

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Transition of radiowaves

production of alpha particles only

Decay of nucleus

Reception of radio waves

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 ratio of inertial mass to gravitational mass is.

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1

0.5

2

3

If two non zero vectors are perpendicular to each other then their scalar product is equal to.

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-1

1

0

Infinity

When a body is taken out of the earth's gravitational field, the P.E. with respect to earth is

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Zero

Minimum

Maximum

geothermal

Mean free path of gas molecules is inversely proportional to its.

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Volume

Pressure

Temperature

Weight

Who developed hypothetical heat engine that has the maximum possible efficiency in 1824

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Saadi carnot

August Otto

rudolf Diesel

Kari Benz

At what speed the mass of a body will be doubled.

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0.67 C

0.77 C

0.87 C

0.97 C

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