Question
What is the condition necessary for an echo to be heard distinctly?
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Answer
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 $17 m$ in the air or as described by the formula $\frac{V t}{2} \ldots$
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 $17 m$ in the air or as described by the formula $\frac{V t}{2} \ldots$
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