Question

rock under water is 1595 m deep. Find the time in
hich an ultrasonic signal returns after reflection
om the rock. Given speed of ultrasonic waves in
ater = 1450 ms -1
(Ans 22 s)​

Answer 1

Let the velocity of the sonic beam be v.

Distance=1595 m

Time taken by the beam to return from rock=1595/v

Putting v=1450 m/s

Time=1595/1450 second

Time=1.1 s

If you are asking the total time taken by the beam to reach the rock and then come back, then,

Time=2*time taken to reach the rock

Time=2.2 s

Answer 2

Answer:

2,2 secs

Explanation: