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For the wave shown in figure, calculate the frequency and wave length of the wave if its speed is 320 ms–1.

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Important Questions on Sound

MEDIUM

Science>Physics>Sound>Characteristics of Vibrations

Consider the following statements and select the correct alternative: Statement (A): The frequency of the sound wave whose wave length is

1.5 cm

with speed

339 m / s

22600 Hz

. Statement (B): The given sound is audible to human beings.

MEDIUM

Science>Physics>Sound>Characteristics of Vibrations

The linear distance between a consecutive compression and rarefaction in longitudinal wave is

HARD

Science>Physics>Sound>Characteristics of Vibrations

The sound of same pitch and loudness are distinguished from one another by their

EASY

Science>Physics>Sound>Characteristics of Vibrations

Waves inside a gas are

EASY

Science>Physics>Sound>Characteristics of Vibrations

If the speed of wave is

350 m / s

and its wavelength is

100 cm

then the frequency of the wave will be

EASY

Science>Physics>Sound>Characteristics of Vibrations

The velocity of sound wave in a given medium is

V

when its frequency is

ν

. The velocity, when the frequency changes to

5 ν

is :

EASY

Science>Physics>Sound>Characteristics of Vibrations

The speed of sound in air at NTP is

332 m / s

. If air pressure becomes four times the normal then the speed of sound waves will

EASY

Science>Physics>Sound>Characteristics of Vibrations

Consider the following statements :
(A) The velocity of sound in air increases due to presence of moisture in it.
(R) The presence of moisture in air lowers the density of air.
In the above statements:

MEDIUM

Science>Physics>Sound>Characteristics of Vibrations

The given graph shows the displacement versus time relation for a disturbance travelling with velocity $1500 m / s$ . The wavelength of the disturbance will be

Question Image

EASY

Science>Physics>Sound>Characteristics of Vibrations

The speed of a wave in a medium is

760 {ms}^{- 1}

.If

3600

waves are passing through a point in the medium in

2

minutes then its wavelength is

EASY

Science>Physics>Sound>Characteristics of Vibrations

If the speed of wave is

250 m / s

and its wavelength is

50 cm

then the frequency will be:

EASY

Science>Physics>Sound>Characteristics of Vibrations

The frequency of radio waves from a certain radio station is

600 KHz

. Its wavelength is

EASY

Science>Physics>Sound>Characteristics of Vibrations

The wave having compression and rarefaction is known as

MEDIUM

Science>Physics>Sound>Characteristics of Vibrations

Two different instruments (say, guitar and harmonium), playing the same music, their sound appears different though they play same frequency, because:

EASY

Science>Physics>Sound>Characteristics of Vibrations

When sound is refracted from air to water, which of the following will remain unchanged?

MEDIUM

Science>Physics>Sound>Characteristics of Vibrations

What are acoustically measurable quantities related to pitch and loudness?

EASY

Science>Physics>Sound>Characteristics of Vibrations

When are the points on a wave said to be in the same phase?

EASY

Science>Physics>Sound>Characteristics of Vibrations

SI unit of Frequency is ________.