Question # 1

the part of waves at which particles of the medium are below the normal position are called:

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extreme position

crest

trough

compression

Which of the following is an example of simple harmonic motion ?

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Motion of the simple pendulum

The motion of ceiling fan

The spining of the Earth on its axis

A bouncing ball on a floor

Which is used to investigate the properties of electron beam:

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LDR

Electroscope

Proton gun

Electron gun

1 MB =

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1022KB

1023KB

1024KB

1025KB

Half of radius of curvature is called:

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Focal length

Principal focus

Axis

None of these

Eight bits combine to form:

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A byte

Megabyte

Kilobyte

Gigabyte

SI unit of electric potential is:

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Watt

Volt

Coulomb

Joule

When a uranium (92 protons) ejects a beta particle, how many protons are left in the remaining nucleus?

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92 protons

91 protons

93 protons

89 protons

If a neutral body is brought near to the electroscope its leaves:

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Diverge

Contract

Shut

Remain in normal position

Power of electric heater is:

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1500W

4750W

100W

50W

When resistances are connected in parallel, the current passing through them is:

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Same

Zero

Different

Infinite

The basic operations performed by a computer are:

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Arithmetic operations

Non-arithmetic operations

Logical operations

Both a and c

The two inputs of a NAND gate are A and B. Its output would be zero when:

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A = 0, B = 0

A = 1, B= 0

A = 1 , B = 1

A = 0 , B = 1

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