Two waves with frequencies 500 Hz and 502 Hz are:

  1. polarized
  2. identical
  3. coherent
  4. not coherent (their phase difference keeps changing)
Answer

D) not coherent (their phase difference keeps changing)

They produce beats instead. SLO P-11-D-14 · Understanding

Physics MCQ · More Superposition, Stationary Waves and Beats MCQs · Practise