A person observes a change of 2.5 % in frequency of sound of horn of a car. If the car is approaching forward the person & s

A person observes a change of 2.5 % in frequency of sound of horn of a car. If the car is approaching forward the person & sound velocity is 320 m/s, then velocity of car in m/s will be approximaterly :-
A. 8 m / s (approx.)
B. 800 m / s
C. 7 m / s
D. 6 m / s (approx.)

A person observes a change of 2.5 % in frequency of sound of horn of a car. If the car is approaching forward the person & sound velocity is 320 m/s,

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