Physics, asked by sanoojaasharafrayyan, 6 months ago

the distance between a source of sound and the reflecting surface is 20 m . which of the following sentences is true
a. echo can be heard definitely
b. echo cant be heard
c. echo can be heard if there is no other sound absorbing material is around
d. none of these

Answers

Answered by Anonymous

0

Explanation:

option no.b is correct

b. echo can't be heard

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