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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
The quality of a sound depends on the amplitude of wave.
Decibel is the unit of pitch of a sound.
The pitch of a stringed instrument is increased by .................. tension in string.
Figure shows four waves A, B, C, and D
Name the wave which shows
(a) a note from a musical instrument,
(b) a soft note
(c) a shrill note.
Two waves of the same pitch have amplitudes in the ratio 1 : 3 What will be the ratio of their
- loudness,
- pitch?
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of frequencies?
Explain the following and illustrate your answer by drawing appropriate diagram:
Quality of a musical note.
When a gun is fired at a distance, why is it that the flash is seen almost instantaneously while the sound is heard a little later?
Two waves of the same pitch have their amplitudes in the ratio 2 : 3.
(i) What will be the ratio of their loudness?
(ii) What will be the ratio of their frequencies?
