A source of sound {\S} emitting waves of frequency 100 {\Hz} and an observer {\O} are located at some distance from each other. The source is moving with a speed of 19.4 {\m} { s}^{-1} at an angle of 60^{\circ} with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air 330 {\m} { s}^{-1} ), is [NEET 2015]

NEET 2015 Physics and Chemistry Paper

Question : 24 of 91

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A source of sound S emitting waves of frequency 100‌Hz and an observer O are located at some distance from each other. The source is moving with a speed of 19.4m s−1 at an angle of 60∘ with the source observer line as shown in the figure. The observer is at rest. The apparent frequency observed by the observer (velocity of sound in air 330m s−1 ), is

[NEET 2015]

106‌Hz
97‌Hz
100‌Hz
103‌Hz

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