A passing gravitational wave changes the interference pattern because:

  1. one arm is stretched while the other is squeezed, changing the path difference
  2. the mirrors heat up
  3. the arms rotate
  4. the laser changes colour
Answer

A) one arm is stretched while the other is squeezed, changing the path difference

Path difference changes. SLO P-11-D-21 · Understanding

Physics MCQ · More Gravitational Waves MCQs · Practise