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A person observes a change of 2.5 % in f...

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.)

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The correct Answer is:
A
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