Question # 1

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

The profile of periodic waves generated by a source executing S.H.M is represented by a.

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Circle

Sine curve

Tangent curve

Cosine curve

Star moving towards the earth show

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Red shift

Blue shift

Green shift

Yellow shift

Crests and trough are formed in.

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Longitudinal waves

transverse waves

Stationary waves

Compression waves

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

The waves used in radar speed trap are

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Longitudinal

Sound wave

Micro waves

Matter waves

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

the louder the sound, the greater will be its.

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Speed

Frequency

Amplitude

Wave length

When sound waves enter in different medium, the quantity that remains unchanged is.

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Intensity

Speed

Frequency

Wave length

Radar system is an application of.

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Chemical effect

Electric effect

Magnetic effect

Doppler's effect

A set of frequencies which are multiples of the fundamental frequency are called.

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Doppler effect

Nodal frequencies

Beat frequencies

Hamonics

Who did give the correct formula for the speed of sound in air?

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Boyle

Laplace

Newton

Einstein

The distance between the consecutive nodes is

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Increase in the velocity of sound in air for 1 ^oC rise in temperature is.

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61 ms-1

0.61 ms-1

161 ms-1

261 ms-1

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

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Doppler's effect

reflection

Laplace correction

Beats

In transverse waves the particles of medium vibrate

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Along the direction of wave

Opposite to direction of wave

Perpendicular to direction of wave

Slowly

The distance between two consecutive crests of troughs is called

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Time period

Wave length

Frequency

Displacement

If a stretched string 4 m long and it has 4 loops of stationary waves, then the wave length is.

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1m

2 m

3 m

4 m

Speed of sound in vacuum is

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280 ms-1

332 ms-1

333 ms-1

Zero ms-1

A stretched string 2 m long and it has 2 hopes of stationary waves hen the wavelength is

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4 m

2 m

3 m

1 m

the velocity of sound at 0 ^oC is 332 ms-1, the velocity of sound at 10 ^oC will be

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337.1 ms-1

338.1 ,ms-1

342.1 ms-1

328.1 ms-1

The process followed by Newton for the determination of speed of sound in air is

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Adiabatic

Isothermal

Isobaric

Isochoric

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

Half wavelength corresponds to

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0 ^o

90 ^o

180 ^o

360 ^o

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Physics Fsc Part 1 Chapter 8 Online Test MCQs With Answers

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