# A source of sound and an observer are approaching each other with the same speed which is equal to…

Q: A source of sound and an observer are approaching each other with the same speed which is equal to 1/10 times the speed of sound. The apparent change in the frequency of the source is

(a) 22.2% increase

(b) 22.2% decrease

(c) 18.2% decrease

(d) 18.2% decrease

Ans: (a)