A submarine (A) travelling at is being chased along the line of its velocity by another submarine (B) travelling at B sends a sonar signal of to detect A and receives a reflected sound of frequency . The value of is close to :
(Speed of sound in water )
frequency of sound when source is moving towards the observer and observer is moving away from source -
- wherein
Speed of sound
Speed of observer
speed of source
Original frequency
apparent frequency
We have given that
Frequency received by A,
Frequency of the reflected sound is heard or received by
Option 1)
Option 2)
Option 3)
Option 4)
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