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An Indian Submarine is moving in "Arab Sager" with a constant
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An Indian Submarine is moving in "Arab Sager" with a constant velocity, detect enemy it sends out sonar waves which travel with velocity 1050 m/s in water. Initially, the waves are getting reflected from a fixed land the reflected waves are coming back to the submarine. The frequency of reflected waves are detected by & submarine and found to be 10% greater than the sent waves.
Now an enemy ship comes in front. due to which at type frequency of reflected waves detected by submarine becomes 21% greater than the sent waves.
The speed of the Indian submarine is :

A
10 m/s

B
50 m/s

C
100 m/s

D
20 m/s

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An Indian Submarine is moving in "Arab Sager" with a constant velocity, detect enemy it sends out sonar waves which travel with velocity 1050 m/s in water. Initially, the waves are getting reflected from a fixed land the reflected waves are coming back to the submarine. The frequency of reflected waves are detected by & submarine and found to be 10% greater than the sent waves.
Now an enemy ship comes in front. due to which at type frequency of reflected waves detected by submarine becomes 21% greater than the sent waves.
The speed of the Indian submarine is :
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Question Text
An Indian Submarine is moving in "Arab Sager" with a constant velocity, detect enemy it sends out sonar waves which travel with velocity 1050 m/s in water. Initially, the waves are getting reflected from a fixed land the reflected waves are coming back to the submarine. The frequency of reflected waves are detected by & submarine and found to be 10% greater than the sent waves.
Now an enemy ship comes in front. due to which at type frequency of reflected waves detected by submarine becomes 21% greater than the sent waves.
The speed of the Indian submarine is :