An organ stop called 'voix céleste' deliberately uses two pipes slightly out of tune to produce:

  1. silence
  2. a higher octave
  3. a pleasant wavering (beats) effect
  4. an echo
Answer

C) a pleasant wavering (beats) effect

Intentional beats. SLO P-11-D-16 · Application

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