MCQ
The difference between the apparent frequency of a source of sound as perceived by the observer during its approach and recession is 2% of the frequency of the source. If the speed of sound in air is $300 ms^{-1}$ , then the velocity of the source is ____________.
- A$1.5ms^{-1}$
- B$12 ms^{-1}$
- C$6 ms^{-1}$
- ✓$3 ms^{-1}$
