Question # 1

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

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6 ohm

4 ohm

zero ohm

1.33 ohm

Resolving power in mth order diffraction for grating is given by:

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R = N/m

R = m/N

R = N x m

None of these

Velocity is a

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scalar quantity

vector quantity

constant quantity

none of them

Which one of the following physical quantities changes with relativistic speed

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Length

Mass

Time

All of the above

Any superconductor with critical temperature above 77 K, is referred as

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low temperature superconductor

high temperature superconductor

very low temperature superconductor

none of them

The value of threshold frequency for different metals is

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different

same

may be different or may be same

none of these

When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency

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9.4 kHz

940 kHz

94 kHz

None of these

Rate of diffusion is

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Faster in solids than in liquids and gases

Faster in liquids than in solids and gases

Equal to solids, liquids and gases

Faster in gases than in liquids and solids

X-ray are also known as

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Roentgen rays

Maxwell rays

Plank range

Einstein rays

The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict

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short range order

long range order

both of them

none of them

Bernoulli's equation is based upon law of conversation of

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mass

momentum

Energy

None

Bodies which falls freely under gravity provides good example of motion under:

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Uniform acceleration

Non-uniform acceleration

Uniform velocity

None of these

The artillery shells travel along parabolic paths under the influence of

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magnetic field

electric field

electromagnetic field

gravitational field

Particles have the mass smallest of following is:

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Electron

Proton

Neutron

Quark

If the length of a simple pendulum is 0.25 m its time period would be

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1.0 s

2.0 s

3.0 s

4.0 s

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

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3 N

4 N

5 N

6 N

The magnifier forms a virtual image of the object at:

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Least distance of distinct vision

Much farther than the least distance

Both A and B are correct

None of these

A field is uniform and much stronger:

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Inside a long solenoid

Outside a long solenoid

At the end of a long solenoid

At the central point of long solenoid

None of these

Phenomenon of radioactivity is due to disintegration of

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nucleus

neutron

proton

molecule

Which of the following are the units of intensity of light

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Pois

Lux

Siemen

Candela

If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have

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different values

same values

zero valves

constant valves

If two bodies of equal masses moving in the same direction collide elastically, then their velocities.

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Are added

Are subtracted

Do not change

Are exchanged

In LCR circuit which one of the following statement is correct?

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L and R oppose each other

R value increase with frequency

The inductive reactance increases with frequency

The capacitive reactance increases with frequency

Which of the following material has smaller has life

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uranium

polonium

radium

radian

Decibel is unit of

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Intensity of light

x-ray radiation capacity

sound loudness

Energy of radiation

A succession of events which bring the system back to its initial condition is called

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reversible process

irreversible process

a cycle

none of them

The law of conservation of mass gives us the

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equation of continuity

Bernoulli's theorem

both of them

none of them

1 gm-cm^-3is equal to:

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10³kg-m^-3

10^-3kg-m^-3

1 kg-m^-3

10⁶kg-m^-1

The galvanometer can be made sensitive if the value of the factor C/BAN is

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constant

small

large

none of these

The force between two chares 0.06 m apart is 5 N. 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

Which of the following quantity for particle executing SHM is non-zero at mean position

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Force

Acceleration

Velocity

Displacement

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