As two black holes spiral towards each other, the gravitational waves they emit:

  1. increase in frequency and amplitude ('chirp')
  2. decrease in frequency
  3. stop
  4. stay constant
Answer

A) increase in frequency and amplitude ('chirp')

Orbit speeds up before merger. SLO P-11-D-18 · Understanding

Physics MCQ · More Gravitational Waves MCQs · Practise