Question
Physics Question on Ray optics and optical instruments
A source and an observer move away from each other with same velocity of 10 m-1 with respect to the ground. If the observer finds the frequency of sound coming from the source as 1980 Hz, then the actual frequency of the source is (speed of sound in air = 340 ms-1)
A
1950 Hz
B
2100 Hz
C
2132 Hz
D
2486 Hz
Answer
2100 Hz
Explanation
Solution
The correct option is: (B) : 2100 Hz.