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Physics English Medium Fsc Part 1 Chapter 8 Online MCQs Test MCQs With Answers

Question # 1

In stationary waves, the particle velocity at nodes is

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Minimum

Maximum

Zero

Constant

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Question # 2

When ever the path difference between the waves is integral multiple of half the wavelength, interference will be

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Constructive

Destructive

(-)ve

(+) ve

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Question # 3

Diffraction is a special type of

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Reflection

Polarization

Interference

Refraction

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Question # 4

Two waves of same frequency and moving in the same direction produces.

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Interference

Diffraction

Beats

Stationary waves

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Question # 5

When the amplitude of a wave is increase to doubled is energy.

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Remain the same

Increases 4 times

Increases by two times

Decreases by half

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Question # 6

If 30 waves per second pass through a medium at a speed 30 ms-1, then the wavelength is.

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30 m

15 m

1 m

28 m

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Question # 7

The speed of sound increases with the increase of in

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Pressure

Volume

Temperature

Density

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Question # 8

In vibrating string, the points where the amplitude is maximum are called.

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Nodes

Antinodes

Troughs

Crests

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Question # 9

The state of human blood flow can be found by using.

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Newton's formula of speed of sound

Interference of sound

Phenomena of beats

Doppler's effect of sound

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Question # 10

On loading the prong of a tuning fork with wax, the frequency of sound.

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Increases

Decreases

Remains same

First increases then decrease

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Question # 11

Speed of sound in aluminum at 20 ^oC is.

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3600 m/s

5100 m/s

5130 m/s

3500 m/s

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Question # 12

The portion of the wave above mean level is called.

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Node

Antinode

Crest

Trough

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