A) 1 kHz
B) 2 kHz
C) 4 kHz
D) 6 kHz
Correct Answer: D
Solution :
According to Doppler's effect \[f=\left( \frac{v\pm {{v}_{0}}}{v\pm {{v}_{s}}} \right)f\]here\[{{\upsilon }_{0}}=0\]and \[{{\upsilon }_{s}}=0.5\upsilon \] \[\therefore \]\[f=\left( \frac{v}{v-.5v} \right)3=6kHz\]You need to login to perform this action.
You will be redirected in
3 sec