A source of frequency 1200 Hz moves at 60 m/s towards a stationary observer. The speed of sound is 340 m/s. The observed frequency is:

  1. 1410 Hz
  2. 1200 Hz
  3. 1020 Hz
  4. 1460 Hz
Answer

D) 1460 Hz

fo = fs vv - vs = 1200 340340 - 60 = 1460 Hz. SLO P-11-D-03 · Application

Physics MCQ · More Wave Intensity and the Doppler Effect MCQs · Practise