Question
Question: A source of sound emitting a note of frequency 200 Hz moves towards an observer with a velocity v eq...
A source of sound emitting a note of frequency 200 Hz moves towards an observer with a velocity v equal to the velocity of sound. If the observer also moves away from the source with the same velocity v, the apparent frequency heard by the observer is
A
50 Hz
B
100 Hz
C
150 Hz
D
200 Hz
Answer
200 Hz
Explanation
Solution
Since there is no relative motion between observer and source, therefore there is no apparent change in frequency.