ICSE Class 10 Physics 2016 Solved Paper
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Question : 50
Total: 73
State two conditions for an echo to take place.
Solution:
(a) The minimum distance between the source of sound and the reflector must be 17 m
(b) The minimum time taken by the reflected sound to reach the listener should be 0.1 second.
(c) The size of the reflector must be large enough.
(any two)
(b) The minimum time taken by the reflected sound to reach the listener should be 0.1 second.
(c) The size of the reflector must be large enough.
(any two)
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