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Class 11 NEET Physics Waves Questions Questions

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Question : 21

Total: 91

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

106‌Hz
97‌Hz
100‌Hz
103‌Hz

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