A student sends the same light ray from air into two transparent blocks at the same angle of incidence.
| Block | Angle of refraction from the normal |
|---|---|
| P | 22∘22^\circ22∘ |
| Q | 30∘30^\circ30∘ |
Both rays bend towards the normal.
Which comparison is correct for the light inside the blocks?
Its speed is greater in P and its wavelength is shorter in P.
Its speed is smaller in P and its wavelength is shorter in P.
Its speed is smaller in P and its wavelength is longer in P.
Its speed is greater in P and its wavelength is longer in P.
84 exam-style questions on Edexcel GCSE Physics 5.2 The electromagnetic spectrum, covering 5.2.1 Electromagnetic waves and refraction in glass (core practical), 5.2.2 Groups of the electromagnetic spectrum, 5.2.3 Wavelength-dependent behaviour of EM waves, and 5.2.4 Velocities of EM waves in different substances. Each one has a worked solution and a mark scheme showing where the marks go.