Physics, asked by priyankadwivedi234, 14 days ago

Choose the correct answer

To hear a clear echo, the minimum distance of the reflecting surface must be

11.3 m

20 m

21 m

15.5 m

Answers

Answered by Anonymous
3

Answer:

15.5

Answer by @Neelraj

Answered by krishma525
1

Answer:

answer is 15.5

hope it helps you...

Similar questions