Question # 1

Binding energy per nucleus is

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greater for heavy nucleus

least for heavy nucleus

greatest for light nuclei

decreases for medium weight niclei

An induced current can be produced by

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Constant magnetic field

Changing magnetic field

Varying electric field

Constant electric field

None of these

A car is moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed v of the car is:

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38 m/sec

3.8 m/sec

0.6 m/sec

None of these

Absolute zero is considered as that temperature at which:

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All liquid become gases

All gases become liquid

Water freezes

None of these

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

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1 : 2

4 : 1

1 : 4

2 : 1

The valence band of an atom in a solid

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is always empty

may or may not be empty

can never be empty

none of them

The velocity of a body at any instant of its motion is known as

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average velocity

instantaneous velocity

uniform velocity

none of them

The inside cavity of the black body is

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painted white

painted silver

blackened with soot

painted red

An isochoric process is one which take place at

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Constant internal energy

Constant entropy

Constant volume

Constant pressure

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

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0.5 Kwn

2 Kwh

1 Kwh

None of these

An emf is set up in a conductor when it:

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is kept in a magnetic field

is kept in a electric field

Move across a magnetic field

Both (A) and (B)

None of these

A single step index fibre can carry more than

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14 TV channels

14,000 phone calls

16 TV channels

a and b

Which of the following has no dimension

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Stress

Strain

Elastic modulus

Both strain and elastic modulus

Ideal fluid is

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Steady flow

Non-viscous

Incompressible

All of these

If the focal length of objective is 10 mm find its magnification

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18

19

20

21

Newton's third law also says that action and reaction forces always act on the

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Different bodies

Same bodies

Only one body

None of these

The principle of rocket motion is based on the

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First law of motion

Second law of motion

Third law of motion

None 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

The direction of torque can be determined by

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Head to tail rule

Right hand rule

Left hand rule

None of these

Magnetic field inside a solenoid is:

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) Directly proportional to current

Inversely proportional to current

Directly proportional to its length

Inversely proportional to total no of turns

Two sources of light are said to be coherent when the waves produced by them have

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Equal wavelength

Equal amplitude

Equal wavelength and constant phase difference

Amplitude and wavelength are same

One poise = ___________.

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0.1 Nsm^-2

0.1 Pascal second

1.01 x 10⁵N

both A and B

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