Question # 1

The charge on Beta particle is

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+e

-e

-2e

None of these

If the distance between the two charged bodies is halved, the force between them becomes.

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Double

Half

Four times

One times

Binding energy per nucleon is maximum for

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Platinum

Iron

Uranium

Lead

In carbon resistors, then value of Blue colour is.

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6

7

8

9

The motional emf depends upon the

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Length of conductor

Speed of conductor

Strength of magnet

All of these

The energy equivalent of 1 kg of matter is about:

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10^-15 J

1 J

10^-12J

10^-17J

A proton is about 1840 time than an electron. When it is accelerated by a potencial difference if 1 kV, its kinetic energy will be:

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1884 ke V

1/1840 keV

1 keV

920 keV

Marie Curie and Pierre Curie discovered.

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Uranium

Uranium and Radium

Polonium and radium

Radium

When a nucleus emits an alpha particle, its atomic mass decreases by

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1

2

3

4

In full wave rectification number of diodes required are equal to.

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2

3

4

5

The capacitance of a capacitor depends upon.

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Thickness of plates

Charges on the plates

Voltage applied

Geometry of the capacitor

We can never accurately describes all aspects of sbatomic particles simulatanously. It is correct according to:

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Uncertainity Priciple

De-broglie Theory

Einstin Theory

Photo electric effect

Circulation of blood is studied by radio isotope.

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Cobalt -60

Phosphorus -32

Sodium -24

Iodine -131

Specific resistance of a material depends upon.

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Length

Area

Temperature

Both A and B

Two opposite point charge of same magnitude separated by distance 2d, electric potential mid way between them is.

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1 V

2 V

Zero

V/2

When Ohm meter gives full scale deflection it indicates.

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Zero resistance

Infinite resistance

Small resistance

Very High resistance

A battery is used in

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ohmmeter

Ammeter

Galvanometer

Voltemeter

When a PN-Junction is reverse biased the depletion region is.

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Widened

Narrowed

Normal

None of these

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