Question # 1

Surface density of charge is defined as

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Charge per unit volume

Charge per unit length

Charge per unit area

Charge per unit mass

A structure of polymeric solid is:

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An ordered structure

A disordered structure

Intermediate between order and disorder

Any of these

None of these

The phenomenon of generation of induced emf is called

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Electrostatic induction

Magnetic induction

Electromagnetic induction

Electric induction

Both (A) and (D)

Astrophysics is a branch of physics, which deals with

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Sub-atomic

Stars and galaxies

Light and sound

Music

The internal pressure of the blood is

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less than the external atmospheric pressure

greater than the external atmospheric pressure

equal to the external atmosphericpressure

none of them

Which is modified form of galvanometer

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potentiometer

battery

voltmeter

slide wire bridge

The expression F x t is called impulse if the time 't' is

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zero

very large

very small

infinite

Alternating current can induce voltage because it has a

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High peak value

Varying magnetic field

Stronger field than direct curren

Constant magnetic field

Uncertainty is of following type/types:

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Absolute

Fractional

Percentage

All of these

The property of light which does not change with the nature of the medium is:

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Frequency

Amplitude

Wavelength

None of these

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

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incompressible

compressible

viscous

non viscous

Dimension of coefficient of viscosity is

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[MLT¹]

[L^-1T^1]

[ML^-1T^1]

[M^-1L^-1T^1]

Direction of torque can be found out by

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head to tail rule

parallelogram rule

left hand rule

right hand rule

A force applied on a body produces acceleration in

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Its opposite direction

Its own direction

Right angle to the force

None of these

The modulus of rigidity of a liquid is

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Zero

1

Infinite

None of these

Substances which undergo plastic deformation until they break are called:

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Ductile

Brittle

Malleable

Soft

Hard

The magnitude of vector A,B and C are respectively 12,5 and 13 units and A + B = C then the angle between A and B is

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0

π

π/2

π/4

The units of torque and couple are

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N-m and N-m²respectively

N-m and N

N-m^-1for both

N-m²and N-m respectively

The velocity of light in vacuum can be changed by changing

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Frequency

Amplitude

Wavelength

None of these

Internal friction of fluid is

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Resistance

Viscosity

Cohesive force

Surface tension

Polarization is a phenomenon in which

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Electric intensity decreases

Potential difference decreases

Charge 'Q' decreases

All of them

An object is placed at a distance of 200 cm from a convex lens of focal length 10 cm the linear magnification is

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1/3

2/3

3/4

None

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