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A submarine (A) travelling at 18km//hr i...

A submarine (A) travelling at `18km//hr` is being chased along the line of its velocity by another submarine (B) travelling at `27km//hr` B sends a sonar signal of 500 Hz to detect A and receives a reflected sound of frequency v. the value of v is close to (speed of sound in water `=1500ms^(-1))`

A

502 Hz

B

499 Hz

C

504 Hz

D

507 Hz

Text Solution

Verified by Experts

The correct Answer is:
A
Case - I
`{:("(B)","(A)"),("Source","Observer"),(v^(1)=v[(1500-5)/(1500-7.5)],):}`
Case - II
`{:("(B)","(A)"),("Observer","Source"),(v^(1)=v[(1500+7.5)/(1500+5)]~~502Hr,):}`
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