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प्रश्न
What is the condition necessary for an echo to be heard distinctly?
उत्तर
Echo is a reflected sound heard after the original sound strikes a rigid obstacle...
The conditions are-
1- The reflecting surface should have a larger reflecting surface than the wavelength of the sound
2- The minimum distance to hear the echo should be 17m in the air or as described by the formula `(Vt)/2`...
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संबंधित प्रश्न
Define wavelength term in relation to a wave.
Define wave velocity term in relation to a wave.
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Draw a diagram representing a wave of amplitude 4 cm and wavelength 2 m. If the frequency of the wave is 150 Hz, calculate its velocity.
What is mean by the reflection of sound?
