a) <14 HZ 71 AU 173. A source o (b) 246 Hz (c) 240 Hz (d) 260 Hz A source of sound S emitting waves of frequency 100 Hz and an observer 0 are located at some distance from each other. The source is moving with a speed of 19.4 ms 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 is 330 ms), is [CBSE-AIPMT 2015] 60 (a) 100 Hz (b) 103 Hz (c) 106 Hz (d) 97 Hz