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प्रश्न
When sound travels in form of a wave
पर्याय
the particles of medium move from the source to the listener
the particles of medium remain stationary
the particles of medium start vibrating up and down
the particles of medium transfer energy without leaving their mean positions.
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उत्तर
the particles of medium transfer energy without leaving their mean positions.
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संबंधित प्रश्न
State the safe limit of sound level in terms of decibel for human hearing.
In a longitudinal wave, compression and rarefaction are formed.
What is longitudinal wave?
Name the unit in which loudness of sound is measured.
Explain the following and illustrate your answer by drawing appropriate diagram:
Frequency
What is the noise? Give an example.
Draw a diagram to show the waveforms of a pure note and a musical note, of the same pitch and same loudness.
A 0.6 m long stretched wire is made to vibrate in two different modes as shown in figure
(a)
(b)
(i) If the frequency of the note produced in (b) is n, what is the frequency in case (a)?
(ii) In which case (a) or (b), is the note louder? Give reasons.
(iii) In which case is the pitch higher? Give reason.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
