Question # 1

The conduction band in a solid

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may be empty

cannot be empty

should be filed

all of them

The unit of conductance is

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ohm

meter

mho

ohm-meter

Which of the following can become a good permanent magnet

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iron

steel

both of them

none of them

Particles have the mass smallest of following is

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Electron

Proton

Neutron

Quark

No spark plug is needed in

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petrol engine

diesel engine

both of them

none of them

Neutrons are

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positive charge

negatively charged

massless

neutral

The distance travelled byα-particle in a medium before coming to rest, is called

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range ofγ-particle

range of neutrons

range of particle

none of these

The direction of the streamlines is the same as the direction of the

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force

torque

velocity

weight

When a body moves with a constant speed in a circle:

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No work is done on it

No acceleration is produced in the body

Velocity remains constant

None of these

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

In solids, only following type/s of wave can travel:

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Transverse

Longitudinal

Both A and B

None of them

If a glass slab is placed in the path of a converging beam of light The point of convergence of light

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Moves away from the glass slab

Moves towards the glass slab

Remains at the same point

Moves straight

The equations for uniformly accelerated motion for body moving at

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Acceleration

Constant acceleration

Instantaneous acceleration

None of these

Which one of the following is the example of reversible reaction

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Melting of ice

Work done against friction

Heat produced by current

Conduction of heat from hot to cold body

The average velocity of Jupiter in Kms^-1

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25

50

58.4

61.0

If we go above the surface of earth equal to the radius of earth than value of g

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g

g/4

g/9

g/2

Trajectory of projectile is

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Ellipse

Hyperbola

Parabola

None of these

A particle moves along a circular path under the action of a force.The work done by the force is

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Zero

Positive and non zero

Negative and non zero

None of above

The error is constant for ______ error

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Random

Systematic

Both (a) and (b)

None of these

A longitudinal sinusoidal wave has wavelength of 1cm and a period of 2sec. Its wavevelocity is:

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50 cm/ sec

0.5 cm/ sec

5 m/ s

0.005 m/ sec

The spin angular momentum is the angular momentum of a

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Rotating body

Revolving body

Spiming boy

None of these

For geosynchronous satellite the orbital time period is

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Greater than earth s spinning time period

Less than earth s spinning time period

Equal to the earth s spinning time period

None of the earth

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