Short answerEasy1 mark
5(ii)
Two rays PQ and RS are incident on a rectangular glass block as shown in the diagram. Observe the diagram and answer the questions that follow. Which of these two rays will :

scatter more in the atmosphere?
Topic: Scattering and wavelength
Question wording verified against source paper
Answer
Exam answer
Ray RS.
Explanation
RS has the lower speed and shorter wavelength, so it scatters more in the atmosphere.
More from Refraction of Light at Plane Surfaces
From the figure given below, the refractive index of medium B with respect to medium A (ₐμᵦ) is:
(a) sin 45° / sin 30°
(b) sin 30° / sin 45°
(c) sin 45° / sin 60°
(d) sin 60° / sin 45°2026When a ray of light passes from a denser to a rarer medium, its wavelength ............... [decreases / increases].2026the angle of incidence is maximum.2026the angle of incidence is minimum.2026the angle of incidence is equal to the angle of emergence.2026What is the product of the ratio
sin i / sin r
at the first surface and at the second surface?2026