Question # 1

What does the term e-mail stand for:

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Emergency mail

Electronic mail

Extra mail

External mail

For the emission of electrons from the tungsten filament the values of current and voltage are taken as:

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0.1 A and 2V

0.2 A and 4V

0.3A and 6V

0.4A and 8V

In CD presence of pits is indicated by:

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0

2

3

1

Radiation was found in:

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1896

1895

1897

1898

Which of the following is not processing:

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Arranging

Manipulating

Calculating

Gathering

The unit of intensity of sound:

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Wm^-1

Wm^-2

Wm

Wm²

Safe limit of radiations exposure in one year.

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4 rem

5 rem

3 rem

6 rem

During S.H.M acceleration of the body is maximum at:

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Mean position

Extreme positions

Between mean & Extereme

None of these

What is the direction of the magnetic field lines inside a bar magnet?

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From north pole to south pole

From south pole to north pole

From side to side

There are no magnetic field lines.

electric field is weak when:

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lines are far apart

lines are close together

no lines are present

lines are directed outside

How Galvanometer is connected in circuit to detect current:

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In series

In parallel

Fixed

Variable

Who discovered the phenomenon of natural radioactivity?

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Henry Becurial

Merry Curi

Perry

Rutherford

The index of refraction depends on:

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The focal length

The speed of light

The image distance

The object distance

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