Question # 1

The speed of sound in a liquid is …………..than that in gases:

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Ten times

Fifteen times

Five times

Two times

The mirror whose outer surface is reflecting is called:

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Concave mirror

Convex mirror

Mirror

Lens

Resistance of conductor is directly proportional to:

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Length

Pressure

Area

All of these

The sensation of sound persists in our brain for:

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0.1 sec

0.01 sec

1 sec

10 sec

When resistance are connected in series the current passing through them is .

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Different

Zero

The same

None of these

An electric current in conductors is due to the flow of:

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Positive ions

Negtive ions

Positive charge

free electron

Current is equal to:

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IR²

CV

Q/t

IR

The S.I unit of potential difference is:

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Ampere

Coulomb

Volt

Watt

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

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2Ω

4Ω

8Ω

12Ω

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Physics 10th Class English Medium Unit 5 Online Test MCQs With Answers

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