We can hear people round a corner but cannot see them because:

  1. sound wavelengths are similar to doorway sizes but light wavelengths are tiny
  2. light cannot travel round corners at all
  3. sound travels faster than light
  4. sound is transverse
Answer

A) sound wavelengths are similar to doorway sizes but light wavelengths are tiny

Sound diffracts much more. SLO P-11-D-13 · Understanding

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