QAIPM-2015-Ph-1254: NEET 2015 Physics - Class 11 AIPM-2015-Ph-1254 Solution: A source of sound S emitting waves of frequency 100 Hz and an…

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 $19.4\ \text{m s}^{-1}$ 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 $330\ \text{m s}^{-1}$) is 106 Hz 97 Hz 100 Hz 103 Hz