The minimum distance of reflector surface from the source for listening the echo of sound is [CPMT 1997; RPMT 1999; KCET 2000]

The minimum distance of reflector surface from the source for listenin

1.	The minimum distance of reflector surface from the source for listening the echo of sound is [CPMT 1997; RPMT 1999; KCET 2000]
A.	28 m
B.	18 m
C.	324 Hz
D.	16.5 m
Answer» E.

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The minimum distance of reflector surface from the source for listening the echo of sound is [CPMT 1997; RPMT 1999; KCET 2000]

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