The ratio of the apparent frequencies of the hom of a car when approching and receding a stationary observer is 11 : 9. What is the speed of the car, if the velocity of sound in air is 300 m//s?

The ratio of the apparent frequencies of the hom of a car when approch

1.	The ratio of the apparent frequencies of the hom of a car when approching and receding a stationary observer is 11 : 9. What is the speed of the car, if the velocity of sound in air is 300 m//s?
Answer» ANSWER :`30 m s^(-1)`