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An indian submarine is moving in the Ara...

An indian submarine is moving in the Arabian sea with constant velocity. To detect enemy it sends out sonar waves which travel with velocity `1050(m)/(s)` in water. Initially the waves are getting reflected from a fixed island and the reflected waves are coming back to submarine. The frequency of reflected waves are detected by the submarine and found to be `10%` greater than the sent waves.
Now an enemy ship comes in front, due to which the frequency of reflected waves detected by submarine becomes `21%` greater than the sent waves.
Q. Bulk modulus of sea water should be approximately `(rho=_(water)=1000(kg)/(m^3)`)

A

`10^(8)N//m^(2)`

B

`10^(9)N//m^(2)`

C

`10^(10)N//m^(10)`

D

`10^(11)N//m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`v = sqrt((B)/(rho)) rArr 1050 = sqrt((B)/(1000)) , B approx 10^(9) N//m^(2)`
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