On the same path, the source and observer are moving such ways that the distance between these two increases with the time. The speeds of source and observer are same and equal to 10 ms−1 with respect to the ground while no wind is blowing. The apparent frequency received by observer is 1950 Hz, then the original frequency must be (the speed of sound in present medium is 340 m/s)

On the same path, the source and observer are moving such ways that th

1.	On the same path, the source and observer are moving such ways that the distance between these two increases with the time. The speeds of source and observer are same and equal to 10 ms−1 with respect to the ground while no wind is blowing. The apparent frequency received by observer is 1950 Hz, then the original frequency must be (the speed of sound in present medium is 340 m/s)
A.	2068 Hz
B.	2100 Hz
C.	1903 Hz
D.	602 Hz
Answer» B. 2100 Hz

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