Physics 9702 · AS & A Level · Progressive waves

Progressive waves — practice question

As it travels through air, a sound wave becomes less intense while its frequency remains constant. Which statement is the correct one?

  • AThe maximum displacement of the particles changes between one particle and the next particle.
  • BThe phase difference between adjacent particles is zero.
  • CThe wavelength is the distance between two particles that have a phase difference of $180^$.
  • DTwo particles that have a phase difference of $360^ $ have the same maximum displacement.

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI