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प्रश्न
What is an echo
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उत्तर
The sound heard after reflection from a distant obstacle after the original sound has ceased is called an echo.
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संबंधित प्रश्न
Name the factor that determines Loudness of the sound heard.
Name one property of waves that do not change when the wave passes from one medium to another.
Smaller the membrane, .................. is the pitch.
State three factors on which loudness of sound heard by a listener depends.
Name the characteristic of sound related to its frequency
Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
Explain the following and illustrate your answer by drawing appropriate diagram:
Loudness
Which characteristics of sound will change if there is a change in its amplitude and its waveform.
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
Give scientific reasons.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
