wave_mechanics dopplers_effect Question 13
Question: 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
[MP PMT 1990]
Options:
A) 50 Hz
B) 100 Hz
C) 150 Hz
D) 200 Hz
Show Answer
Answer:
Correct Answer: D
Solution:
Since there is no relative motion between observer and source, therefore there is no apparent change in frequency.