Question

Objective Questions II (One or more correct option)
8. 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. An observer in the other
vehicle hears the frequency of the whistle to be f. The speed
of sound in still air is v. The correct statement(s) is (are)
(a) If the wind blows from the observer to the source,
(2013 Adv.)
(b) If the wind blows from the source to the observer, 12 >
(C) If the wind blows from the observer to the source, f <
(d) If the wind blows from the source to the observer, 1 <1
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Answer 1

(C) If the wind blows from the observer to the source, f <