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10th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers

Question # 1

The speed of sound is air at 21 ^oC is:

Choose an answer

336 ms^-1

343 ms^-1

430 ms^-1

470 ms^-1

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Question # 2

The intensity of lawn mover is:

Choose an answer

10-1 wm^-2

10-2 wm^-2

10-3 wm^-2

10-4 wm^-2

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Question # 3

To hear echoes, the minimum distance of the obstacle from source of sound should be:

Choose an answer

10m

15m

17m

20m

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Question # 4

The angle of which prism deviates the incident ray is called:

Choose an answer

angle of incident

angle of reflection

angle of deviation

angle of minimum deviation

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Question # 5

Those quantities whose values change gradually or stay constant are called:

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Physical quantities

Digital quantities

Log quantities

Analog quantities

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Question # 6

A conductor of electric current is:

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Wood

Rubber

Plastic

Copper

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Question # 7

A 3Ω resistor having 2A current will dissipate the power of:

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12W

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Question # 8

Transformer works on _______ supply.

Choose an answer

A.C

D.C

Battery

Both A and B

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Question # 9

The galvanometer has been named after the scientist:

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Lewis

Lowry bronsted

Luigi Galvano

Galvano Einstein

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Question # 10

Radio waves are:

Choose an answer

Longitudinal waves

Transverse waves

Electromagnetic waves

All of these

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Question # 11

Bets can hear sound of frequency up to:

Choose an answer

100,000 Hz

25000 Hz

120,000 Hz

1000 Hz

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Question # 12

In simple harmonic motion, the acceleration of the body is…………. Proportional to the displacement.

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Inversely

Directly

Equally

Ration

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Question # 13

Joule’s law is W=

Choose an answer

IR/t

IRt²

IR²t

I²Rt

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