Colours seen in a soap film are produced by:

  1. dispersion in a prism
  2. interference of light reflected from the two surfaces
  3. the Doppler effect
  4. polarization
Answer

B) interference of light reflected from the two surfaces

Thin-film interference. SLO P-11-D-08 · Understanding

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