Question # 1

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic 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 pitch of sound deepens upon

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Intensity of sound

Loudness of sound

Wavelength of sound

Frequency of sound

According to Newton, sound travels in air under conditions of.

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Adiabatic

Isothermal

Isobaric

Isochoric

If 20 waves passes through he medium in 2 sec of 10 ms-1 then he wavelength is.

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200 m

2 m

1 m

0.5 m

Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is.

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Zero

2

3

4

Two tunign forks of frequencies 260 Hz and 256 Hz are sounded together , the number of beats per second is.

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2

258

516

4

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

Diffraction is a special type of

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Reflection

Polarization

Interference

Refraction

Star moving towards the earth show

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Red shift

Blue shift

Green shift

Yellow shift

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

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Doppler effect

Nodal frequencies

Beat frequencies

Hamonics

10 waves pass through a point in 2 seconds with speed 10 ms-1 the frequency of wave will be

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1 Hz

2 Hz

5 Hz

10 Hz

Light waves are

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Longtail waves

Transvers waves

Stationary waves

Mechanical wave

The distance between two consecutive trough is called.

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Displacement

Amplitude

Wave length

Wave front

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

Velocity of sound is independent of

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Temperature

Density

Pressure

Medium

In which medium the speed of sound is greater.

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Oxygen

Air

Water

copper

Waves transport energy without transporting

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Matter

Force

Momentum

All of these

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Physics Fsc Part 1 Chapter 8 Online Test MCQs With Answers

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