Note AcademyNote Academy
Start

Physics (AS & A Level) · Oct / Nov 2018 · Paper 13 · Question 28

9702Interference

A student connects two loudspeakers to a signal generator. As the student walks from P to Q, he notices that the loudness of the sound rises and falls repeatedly. What causes the loudness of the sound to vary?

  1. Adiffraction of the sound waves
  2. BDoppler shift of the sound waves
  3. Cinterference of the sound waves
  4. Dreflection of the sound waves

As printed in the paper

Show the answer

Correct answer: C. interference of the sound waves

Sit this whole paper →More on Interference

Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.