Two vehicles, each moving with speed u on the same horizontal straight road, are approaching each other. Wind blows along the road with velocity w. One of these vehicles blows a whistle of frequency f 1 . An observer in the other vehicle hears the frequency of the whistle to be f 2 . The speed of sound in still air is V. The correct statement(s) is (are):
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION
(a, b)
If wind blows from source to observer
f 2 = 
⇒ f 2 > f 1
If wind blows from observer to source
f 2 = 
⇒ f 2 > f 1
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