(a(i))[1]
Use the protractor to measure the angle of incidence of the light ray at the air boundary.
(a(ii))[3]
Calculate the angle of refraction in air.
(b(i))[1]
State the meaning of critical angle.
(b(ii))[2]
Calculate the critical angle for light in glass of refractive index 1.56.
(c(i))[1]
Name the process occurring at the boundary between the shallow water and the deep water.
(c(ii))[1]
Tick one box to show which wave property is unchanged in shallow water compared with deep water. Amplitude Frequency Speed Wavelength