There is a detective submarine installed inside sea water post 26/11 incident to detect terrorists. It is moving with constant speed V_theta along a straight line and it sends a wave which travels with speed V_w = 1100m/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_s comes in between the submarine and the island. Frequency of waves reflected from the ship is 80% more than the original frequency.Speed of enemy ship V_sis

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 V_theta along a straight line and it sends a wave which travels with speed V_w = 1100m/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_s comes in between the submarine and the island. Frequency of waves reflected from the ship is 80% more than the original frequency.Speed of enemy ship V_sis
Answer» 220 m/sec 110 m/s 200 m/s NONE ANSWER :A

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