The Wave Equation (OCR A Level Physics)

Revision Note

Test yourself
Katie M

Author

Katie M

Last updated

The Wave Equation

  • The wave equation links the speed, frequency and wavelength of a wave
  • This is relevant for both transverse and longitudinal waves

 Wave equation, downloadable AS & A Level Physics revision notes

  • The wave equation shows that for a wave of constant speed:
    • As the wavelength increases, the frequency decreases
    • As the wavelength decreases, the frequency increases

 Frequency and wavelength, downloadable AS & A Level Physics revision notes

The relationship between frequency and wavelength of a wave

Worked example

The wave in the diagram below has a speed of 340 m s–1.WE - Wave equation question image, downloadable AS & A Level Physics revision notesWhat is the wavelength of the wave?

Worked example - wave equation, downloadable AS & A Level Physics revision notes

Examiner Tip

You may also see the wave equation be written as c = where c is the wave speed.However, c is often used to represent a specific speed - the speed of light (3 × 108 m s-1). Only electromagnetic waves travel at this speed, therefore it’s best practice to use v for any speed that isn’t the speed of light instead.

You've read 0 of your 5 free revision notes this week

Sign up now. It’s free!

Join the 100,000+ Students that ❤️ Save My Exams

the (exam) results speak for themselves:

Did this page help you?

Katie M

Author: Katie M

Expertise: Physics

Katie has always been passionate about the sciences, and completed a degree in Astrophysics at Sheffield University. She decided that she wanted to inspire other young people, so moved to Bristol to complete a PGCE in Secondary Science. She particularly loves creating fun and absorbing materials to help students achieve their exam potential.