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Earn 100

Define longitudinal wave.

Important Questions on Sound

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Science>Physics>Sound>Propagation of Sound

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

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Science>Physics>Sound>Propagation of Sound
Two different instruments (say, guitar and harmonium), playing the same music, their sound appears different though they play same frequency, because:
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Science>Physics>Sound>Propagation of Sound
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
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Science>Physics>Sound>Propagation of Sound
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:
EASY
Science>Physics>Sound>Propagation of Sound
The wave having compression and rarefaction is known as
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Science>Physics>Sound>Propagation of Sound
The velocity of sound wave in a given medium is V when its frequency is ν. The velocity, when the frequency changes to 5ν is :
HARD
Science>Physics>Sound>Propagation of Sound

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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Science>Physics>Sound>Propagation of Sound

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

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Science>Physics>Sound>Propagation of Sound
The electron in the hydrogen atom is moving with a speed of 2.3×106 m s-1 in an orbit of 0.53 A0. Calculate the period of revolution of electron. π=3.142
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Science>Physics>Sound>Propagation of Sound
Draw a graph between displacement from mean position and time for a body executing free vibration in a vacuum.
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Science>Physics>Sound>Propagation of Sound
If the speed of wave is 250 m/s and its wavelength is 50 cm then the frequency will be:
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Science>Physics>Sound>Propagation of Sound
If the frequency of wave is tripled, then its wave length:
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Science>Physics>Sound>Propagation of Sound
When sound is refracted from air to water, which of the following will remain unchanged?
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Science>Physics>Sound>Propagation of Sound
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 is 22600 Hz. Statement (B): The given sound is audible to human beings.
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Science>Physics>Sound>Propagation of Sound
If the speed of wave is 350 m/s and its wavelength is 100 cm then the frequency of the wave will be
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Science>Physics>Sound>Propagation of Sound
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 
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Science>Physics>Sound>Propagation of Sound

Complete the table using given statements associated with waves. 

  1. Particles vibrate in a direction parallel to the direction of propagation of waves. 
  2. Formed on the surface of solids and liquids.
  3. Crests and troughs are formed.
  4. Compression and rarefactions are formed.
Longitudinal waves Transverse waves
   

 

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Science>Physics>Sound>Propagation of Sound
Waves inside a gas are
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Science>Physics>Sound>Propagation of Sound

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

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Science>Physics>Sound>Propagation of Sound
The frequency of a source of sound is 20 Hz. Its time period _____ second.