A harbour wall gap 5 m wide is approached by sea waves of wavelength 5 m. The waves inside the harbour will:

  1. spread out widely
  2. double in height
  3. stop
  4. travel straight with no spreading
Answer

A) spread out widely

Gap ≈ wavelength. SLO P-11-D-13 · Understanding

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