Question

1. In a submarine equipped with sonar,
the time delay between the generation
of a pulse and its echo after reflection
from an enemy submarine is observed
to be 80 s. If the speed of sound in water
is 1460 ms. What is the distance of
enemy submarine? Ans: (58.40 km)​

Answer 1

Answer:

58.4 km

Explanation:

t=80s

v=1460 m/s

let distance be d

then, v=2d/t

So, d=vt/2 = 1460*4

=5840 m = 58.4 km

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