Question # 1

parallel plate consists of 2 metal plates separated by:

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conductor

insulator

wooden plate

plastic foam

the substance in which electric current flows easily is called:

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transistor

semi conductor

insulator

conductor

Radio waves are:

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Electric waves

Electromagnetic waves

X-rays

Radio active ways.

Which is not a hardware device?

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CPU

Windows

Keyboard

Mouse

1.6x10^-19 J= :

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1F

1N

1eV

The filament of an electric bulb is made of:

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Nickel

Aluminium

Tungsten

Carbon

The phenomena used in capacitor is:

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electrostatic induction

induced current

electric field

electroscope

1 KB =______________

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1022 bytes

1023 bytes

1024 bytes

1025 bytes

It is used in satellite communication:

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Radio waves

Micro waves

Light waves

Electrical waves

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

Nichrome wire is an alloy of:

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Lead and zinc

Silver and copper

Nickel and chromium

Iron and copper

Which component is output device of computer?

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CPU

C.D

Keyboard

Monitor

Instrument used for detecting and testing the nature of charge on a body is called:

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Incubator

Spectroscope

voltmeter

electroscope

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