The minimum distance between the source and the reflector, so that an echo is heard is approximately equal to _______.

17 m

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34 m

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10 m

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50 m

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Solution

The correct option is A
17 m

The minimum distance between the source and the reflector, so that an echo is heard is approximately equal to 17 m.

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Similar questions

The minimum distance between the source and the reflector in air, to hear an echo, is approximately :

(a) 10 m (b) 17 m

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