Question # 1

The frequency of the carrier waver used of radio transmission:

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30 KHZ

40 KHZ

50 KHZ

60 KHZ

How many electrons Guns are used in colour T.V?

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One

Two

Three

Four

in binary system. 37 is written as.

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101101

100101

110011

101011

The examples of semi - conductors:

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sodium and potassium

calcium and potassium

Germanium and silicon

carbon and nitrogen

analogue signal is recorded on.

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Magnetic tape

Floppy disk

Hard Disk

C.D

Revolutionary charges have occur in last ............. years.

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30

40

50

60

English word "9" has been divided into ............ segments.

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5

6

7

8

The deficiency of elctrons in outermost shell of silicon atom is called.

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Valent shell hole

Doping

Hole

None of these

In P-type semi -conductior, most of the current is due to.

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Free electron

Holes

Positive ions

Heat

the number of (101)₁₀ in decimal is equal to .......... inbinary.

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0101111

0000101

10101101

1100101

In Pure -semi conductors no free electrons are available to conduct electric current at.

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Ordinary temperature

Low temperature

High temperature

None of these

The substances through which current can pass easily are called:

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conductors

insulators

Semi - conductors

Non - Electrolytes

Digital singles are represented by;

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zero and 1

zero and 10

1 and 2

o and 9

The number of hovering satellites which can send transmissions to all over the world:

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one

Two

Three

Four

The speed of radio wave is:

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Light

Air

Sound

Rocket

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General Science 10th Class English Medium Chapter 9 Online Test MCQs With Answers

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