Echo Minimum Distance (Jee Mains) | ExamDuo
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Wave motion
Medium
Echo Minimum Distance
The effect of a sound pulse lasts on the ear for 0.1 second. Thus for a person to hear the echo of a sharp sound, the minimum distance of the reflector in terms of speed of sound v is
SELECT ONE OPTION
A
v
10
B
v
20
C
v
5
D
v
50
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