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Physics 10th Class English Medium Unit 7 Online Test MCQs With Answers

Question # 1

A and B are the two inputs of a NOR gate. Its output would be 1 when:

Choose an answer

A = 1, B = 1

A = 0 , B = 1

A = 1, B = 0

A = 0 , B = 0

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Question # 2

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

known as:

Choose an answer

Boiling

Evaportion

Conduction

Thermionic emission

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Question # 3

If Current flowing through switch then the output is expressed as:

Choose an answer

-1

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Question # 4

If the distance between two point charges is reduced to half, the coulomb’s force become:

Choose an answer

Half

Two times

One fourth

Fourth times

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Question # 5

Power of hair dryer is:

Choose an answer

1000 W

750 W

10 W

75 W

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Question # 6

Capacitors are used to store:

Choose an answer

Current

Voltage

Charge

Resistance

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Question # 7

The device which converts digital quantities into analog quantities is called:

Choose an answer

ADC

DAC

ACD

CAD

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Question # 8

Those quantities whose values do not remain constant are called:

Choose an answer

physical quantities

Digital quantites

Log quantities

Analog quantities

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Question # 9

Digital technology is used in:

Choose an answer

Bulb

Radar

Electric motor

All of these

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Question # 10

Positive charge can be produced by:

Choose an answer

Combing in hair

Rubbing glass rod on silk

By rubbing ebonite rod on wool

By rubbing glass rod wool

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