Science, asked by flyerboy198, 2 months ago

if sunil is standing between 2 parallel walls.the wall closest to him is 680 m.if he shouts,he hears the first echo after 4 seconds,What is the distance between the walls
Options:-
1)1650 m
2)1680 m
3)1700 m​

Answers

Answered by sanjudnath
0

Answer:

2)1680 m

hope its helpful

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