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)) Velocity V_(0) is:

There is a detective submarine installed inside sea water post 26/11 i

1.	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)) Velocity V_(0) is:
Answer» 50 m/sec 100 m/sec 10 m/s 25 m/s Answer :B

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