Question # 1

The solid with definite M.L are called:

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Crystalline

Amorphous

Polymeric

None of above

In Helium Neon laser, the discharge tube is filled with

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80% He, 20% Neon

85% He, 15% Neon

83% He, 17% Neon

90% He, 10% Neon

The value of capacitive reactance is given by

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Xc = VI

All of above

Electromagnetic induction is exactly according to law of:

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Momentum

Charge

Energy

Mass

the number of terminals in a semiconductor diode are

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2

3

4

5

The peak to peak value of alternating voltage is

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2V_o

V_o

None of these

Nuclear fission was discovered by:

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Otto Hahn

Friz strassmann

Both a and b

Michaelson

Commutator was invented in

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1834

1820

1840

1835

Radioactivity happen due to the disintegration of

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Nucleus

Mass

Electrons

Protons

Platinum wire becomes yellow at a temperature of.

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900^oC

1300^oC

1600^oC

500^oC

The charge number of Ba is.

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197

141

56

85

To convert a galvanometer into an ammeter, we connect with it a

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Shunt resistance

Low value parallel

Low value by pass resistor

All of above

The binding energy per nucleon is maximum for

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Helium

Iron

Potassium

Radium

when an inductor comes close to a metallic object, its inductance is.

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Decreased

Increased

Becomes half

Becomes 4 times

The electric field created by positive charge is:

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Radially outward

Circular

Radially inward

Zero

Laser is a device which can produce:

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Intense beam of light

Coherant beam of light

Monochromatic beam of light

All of the above

The number of neutrons in Li are

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2

3

4

7

By emitting Beta particle and gama particle simultaneously the nucleolus changes in its charges by

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N

N/2

N/4

3N/4

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