Question # 1

The mechanism of transports energy of all the waves is

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Different

Same

Complicated

Easy

With increase of temperature, speed of sound.

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Remains constant

Becomes zero

Decreases

Increases

Sound waves are

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Electromagnetic waves

Transverse waves

Compressional waves

Matter waves

Longitudinal waves do not exhibit

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Reflection

Refraction

Polarization

Diffraction

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

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Intensity

Speed

Frequency

Wave length

The speed of sound increases with the increase of in

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Pressure

Volume

Temperature

Density

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

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Carnot theorem

Interference

Doppler effect

Beats

Which of the following is mechanical wave

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Heat

Light

Sound

None of these

The wavelength of fundamental note in one end closed pipe in term of length 'l' of pipe is.

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4 l

2l

l

1/4 l

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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

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 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

Light waves are

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Longtail waves

Transvers waves

Stationary waves

Mechanical wave

The distance between two consecutive crests of troughs is called

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Time period

Wave length

Frequency

Displacement

The portion of the wave above mean level is called.

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Node

Antinode

Crest

Trough

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

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Doppler effect

Nodal frequencies

Beat frequencies

Hamonics

When two identical travelling waves are superimposed, velocity of resultant wave.

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Decreases

Increases

Remain same

Becomes zero

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Physics Fsc Part 1 Chapter 8 Online Test MCQs With Answers

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