Question # 1

The particles emitted from a hot cathode surface are:

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Positive ions

Negative ions

Protons

Electrons

The direction of induced e.m.f. in a circuit is in accordance with conservation of.

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Mass

Charge

Momentum

Energy

In totally reflecting prism one angle is of 90^o, and other two angles are of:

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30^o,30^o

45^o,90^o

45^o,45^o

40^o,40^o

Which element is used to locate the ulcer in brain?

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Iodine-131

Phosphorus-32

Carbon-14

Potassium-40

Which statement of the following is false for primary memory?

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The base of primary memory is electronics

This is a random access memory

It gets lost when computer switches off

It is built on laser technology

Program up gradation refers to:

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Program enhancement

Program identification

Program development

Program implementation

We can distinguish between the notes of a piano and flute due to ………… of sound.

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Loudness

Pitch

Quality

Intensity

Wave equation is defined as:

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f = Tλ

f = V λ

V = 2fλ

V = fλ

At extreme position potential energy of the pendulum is:

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Maximum

Minimum

Both a and b

Zero

Wave transfer

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Energy

Frequency

Wavelength

Velocity

1 Nano farad is equal to:

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1X10^-12F

1X10⁹F

1X10^-9F

1X10^-6F

Application of electrostatic is:

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Car painting

Photocopying

Extracting of dust

All of these

Spherical mirrors are used in:

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Medical

Search light

Microscope

All of these

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