Question # 1

Radar system is an application of.

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Chemical effect

Electric effect

Magnetic effect

Doppler's effect

The apparent change in the pitch of sound due to relative motion is called.

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Carnot theorem

Interference

Doppler effect

Beats

Stars moving away from Earth show a

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Green shift

Blue shift

Red shift

Yellow shift

In stationary waves, the particle velocity at nodes is

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Minimum

Maximum

Zero

Constant

The distance between two consecutive crests of troughs is called

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Time period

Wave length

Frequency

Displacement

The periodic variations of sound between maximum and minimum loudness are called.

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Doppler's effect

reflection

Laplace correction

Beats

Frequency range of hearing of cats is.

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20-20000 Hz

10- 10000 Hz

60-20000 Hz

60-70000 Hz

the velocity of sound is maximum at 20 ^oC in

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Lead

Copper

Glass

Iron

Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

The experimental value for the velocity of sound in air is

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233 m-sec^-1

333 m-sec^-1

433 m-sec^-1

533 m-sec^-1

In which medium the speed of sound is greater.

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Oxygen

Air

Water

copper

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

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