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 :

10 m/s

50 m/s

100 m/s

20 m/s

Views: 829 students

Found 7 tutors discussing this question

Elizabeth Discussed

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 :

10 mins ago

Discuss this question LIVE

10 mins ago