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There is a detective submarine installed...

There is a detective submarine installed inside sea water post 26/11 incident to detect terrorists. It is moving with constant speed V0 along a straight line and it sends a wave which travels with speed `V_w = 1100` m/sec in water. Initially waves are getting reflected from a fixed Island and the frequency detected by the submarine is found to be 20% more than the original frequency. When a terrorist ship moving towards the submarine with constant speed V comes in between the submarine and the island. Frequency of waves reflected from the ship is 80% more than the original frequency, (density of water is `10^(3) kg//m^(3)`)
Speed of enemy ship `V_(s)` is:

A

220 m/sec

B

110 m/s

C

200 m/s

D

None

Text Solution

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The correct Answer is:
A
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