Two beams of monochromatic light of the same blue colour are travelling through different media. One beam is travelling through a vacuum, and the other is travelling through a block of glass. The two beams have different intensities.
Which of the following physical quantities is the same for both beams of light?
amplitude
frequency
speed
wavelength
237 exam-style questions on CIE IGCSE Physics General properties of waves, covering General properties of waves. Each one has a worked solution and a mark scheme showing where the marks go.