Question # 1

The useful unit of the angular displacement in SI unit is:

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Degree

Revolution

Radian

Metre

An aircraft is moving with a velocity of 300 ms^-1. If all the forces acting on it are balanced, then

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It still moves with the same velocity

It will be just floating at the same point in space

It will be fall down instantaneously

It will lose its velocity gradually

When we consider the average velocity of a body, then the body is moving in

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straight line

curved path

may be in a straight or curved path

none of them

Which of the following phenomenon proves the particle nature of light

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interference

diffraction

photoelectric effect

none of these

The example of irreversible process is

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slowly liquification

slowly evaporation

an explosion

all of them

In 1932 Chadwick discovered

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proton

neutron

photon

electron

Einstein's theory about gravity if better than Newton's because it gave explanation of:

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Inverse square law

Bending of light

Both A and B

None of above

The characteristic of a body executing S.H.M is that its acceleration is

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inversely proportional to displacement

directly proportional to displacement

independent of displacement

equal to zero

Silicon can be obtained from

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Lead

Uranium

An isotope of oxygen

Sand

Lens's law deals with the

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Magnitude of induced current

Magnitude of induced e.m.f

Direction of induced e.m.f

Direction of induced current

The vast majority of solids are in the form of

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amorphous structure

polymeric structure

crystalline structure

all of them

The weight of 100 kg man in an elevator going up with an acceleration of 4ms^-2will be

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908 N

490 N

100 N

1380 N

If both the length and radius of the wire are doubled,how does the modulus of elasticity change?

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Becomes one fourth

Halved

Doubled

Remains unchanged

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

The viscosity of liquid is due to

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Adhesive force

Cohesive force

Gravitational force

Diffusion

Which one force is only attractive force not repulsive

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Electrostatic force

Gravitational force

Frictional force

All of them

The forbidden energy gap in semiconductors

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Lies just below the valence band

Lies just above the conduction band

Is the same as the valence band

Lies between the valence band and conduction band

Chimney works best when it is

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Tall

Short

Of any shape

Insufficient statement

The force between two chares 0.06 m apart is 5N.If each charge is moved towards the other by 0.01 m,then the force between them will become

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7.20 N

11.25 N

22.50 N

45.00

Find the potential at a point, where a charge of 1 × 10^-3 coulomb is placed at a distance of 10 m is

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1 mV

1.9 KV

1.6 KV

.15 KV

The two thin tubes which show most correctly the behavior of water are

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1 and 2

2 and 3

3 and 4

4 and 5

For a freely falling elevator everything in it

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Will have maximum weight

Will have minimum weight

Will be weightless

None of these

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