Question # 1

A particle moving uniformly along circle its projection along diameter performs

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Linear motion

Projectile motion

SHM

Rotatory motion

the dilation of time applies to the timing processes which are:

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Physical

Chemical

Biological

All of these

None of these

Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?

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potential energy

pressure energy

strain energy

(a) and (b) only

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

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0.1 watt

1 watt

10 watt

100 watt

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

A 220 V, 50 Hz. A.C. source is connected to an inductance of 0.2 H and a resistance of 20 ohm in series. What is the current in the circuit?

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10 A

5 A

33.3 A

3.33 A

When the mass of the colliding body is much larger than the mass of the body at rest, its velocity after collision.

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Becomes half

Becomes zero

Ramains same

Becomes double

At low speeds, the drag force is

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proportional to speed

inversely proportional to speed

not simply proportional to speed

none of them

Absolute temperature can be calculated by

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Means squares velocity

Motion of the molecule

Both A and B

None of these

Conventionally the angular velocity is directed at an angle of

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

Fire fighters have jet attached to the head of their water pipes in order to

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Increase the mass of water flowing per second

Increase the velocity of water flowing out

Increase the volume of water flowing per second

Avoid wastage of water

The time taken by light to travel from moon to earth is:

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80 sec

500 sec

1.802 X 10⁴sec

Aerophysics

Heavy water is made of one oxygen atom and two atoms of:

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Protium

Deuterium

Tritium

Any of these

None of these

The work performed on an object does not depend on:

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Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

Crystalline solids are in the form of:

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Metals

Ionic Compounds

Ceramics

Both (A) and (B)

All of these

Motional emf is called motional:

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Electromagnetic force and is measured in newtons

Electromotive force and is measured in volt

Electromotive force and is measured in newtons

Electromagnetic force and is measured in volts

None of these

If m means mass of gases objected per second from a rocket and v shows the change in velocity, than mv is named as:

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Force

Energy

work

impulse

A ray passing through optical center of a lens, after refraction:

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Passes through focus

Go deviated

Retraces its path

Both B and C

To and from motion of a body about its mean position is known as:

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Translatory motion

Vibratory motion

Rotatory motion

None of these

When a nucleus emits an alpha particle, it atomic mass decreased by

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2

1

4

3

Newton's first law is also called:

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Law of torque

Law of force

Law of inertia

None of these

When brakes are applied to a fast moving car, the passenger will be thrown:

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Forward

Backward

Downward

none of these

For addition and subtraction purposes, absolute uncertainties are:

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Added

Subtracted

Multipiled

Divided

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

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very small energy

very large energy

frictional forces

acceleration due to gravity

Which of the following pairs does not have identical dimensions?

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Torque and energy

Energy and work

Momentum and impulse

Mass and moment of inertia

The current produced by moving a loop of wire across a magnetic field is called

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Direct current

Magnetic current

Alternating current

Induced current

None of these

When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be

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W=Kx_o

W=1/2Kx_o

W=1/2Kx²_o

W=4Kx_o

If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:

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250 N m^-1

25 N m^-1

2.5 N m^-1

None of these

The CRO deflects the beam of electrons, when they passes through uniform

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electric field

gravitational field

magnetic flax

magnetic field

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

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decrease

increase

same

none of these

A resistance used in voltmeter is called

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shunt resistance

high resistance

low resistance

zero resistance

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