Question # 1

The particles emitted from a hot cathode surface are:

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Positive ions

Negative ions

Proton

Electron

Which wire has lowest resistance?

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Thick wire

Thin wire

Very thin wire

All

Short form of information Technology is:

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IT

ITS

CBIS

IS

Positive charge can be produced by:

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Combing in hair

Rubbing glass rod on silk

By rubbing ebonite rod on wool

By rubbing glass rod wool

The advantages of electronic mail are:

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Fast communication

Cost free service

More efficient

All of these

The brain of any computer system is:

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Monitor

Memory

CPU

Control unit

battery is one of the source of:

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heat

light

current

sound

Wave equation is defined as:

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f = Tλ

f = V λ

V = 2fλ

V = fλ

The sound level of rustling of leave is:

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1 dB

20 dB

30 dB

10 dB

The process by which electrons are emitted by a hot metal surface is known as:

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Boiling

Evaporation

Conduction

Thermionic emission

Waves transfer:

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Energy

Wavelength

Velocity

frequency

The intensity level of whispering is:

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20 dB

30 dB

40 dB

50 dB

1 MB =

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1022KB

1023KB

1024KB

1025KB

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