Long-wave radio signals can be received behind hills because:

  1. long wavelengths diffract around the hills
  2. they are reflected by the ground
  3. they travel faster
  4. they are polarized
Answer

A) long wavelengths diffract around the hills

Large wavelengths diffract a lot. SLO P-11-D-13 · Understanding

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