Question # 1

Electric potential of earth is taken to be zero because the earth is good

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Semiconductor

Conductor

Insulator

Dielectric

The unit of work in CGS system is

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Joule

Erg

Dyne

Watt

A unit cell is smallest basic structure which is:

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One dimensional

Two dimensional

Three dimensional

Four dimensional

None of these

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

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a rocket

an aeroplane

a projectile

a ballon

Work done by the force of friction is always

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Positive

Zero

Negative

Maximum

When current passes through a solenoid coil, it behaves like a

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loop

circle

bar magnet

none of these

The ratio of linear stress/linear strain is called as

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Yong's modulus

Bulk modulus

Shear modulus

Modulus

According to the special theory of relativity

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mass and energy are same entities

mass and energy are same entities but interconverible

mass and energy are different entities but interconverible

mass and energy are different entities but non-interconveritble

Dimension of mass is written as:

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M

[M]

(M)

[m]

The induced current in a conductor depends upon:

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Resistance of the loop

Speed with which the conductor moves

Any of these

Both A and B

None of these

The basis to define a temperature scale that is independent of material properties is provided by

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carbon cycle

nitrogen cycle

Carnot cycle

irreversible cycle

According to the relation for constructive destructive interference, the point of contact has zero thickness of air so it should have

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No interference

Conductive interference

Destructive interference

None of these

Which of the following curve in P - V diagram represent adiabatic process

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Which one is least multiple?

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exa

femto

atto

nano

The domains are the small regions of the order of

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Millimeter

Micrometer

Micron

None of these

When the terminal velocity is reached the acceleration of a body moving through a viscous medium is

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Zero

Positive

Negative

Depends upon other factor

When a ray of light goes from a denser medium into a rare medium

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The wavelength of light is decreased

The frequency of light increased

The speed of light is increased

The light undergoes a phase change of π

The atoms molecules or ions in a crystalline solids are at room temperature

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Motionless

Vibrate violently

Fixed

Simply vibrate

The Bernoulli's equation often expressed in

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P + ρV² + ρgh = constant

P + 1/2 ρV + ρgh = constant

P + 1/2 ρV² + ρgh = Constant

P + 1/2 ρV² + gh = constant

The relative permitivity ∈_r for teflon is

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2.1

2.4

2.9

3.0

The relative permitivity for air at 1 atmospheric pressure is

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1.0002

1.0004

1.0006

1.0008

The distance between the objective and eye-piece of a telescope in normal adjustment is

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f/₀-f_e

f₀+f_e

2f_e-f_e

None of these

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