DiagramModerate2 marks
4(iii)
The diagram below shows two parallel rays A (Orange) & B (Blue) incident from air, on air-glass boundary.

Copy and complete the path of the rays A and B.
Topic: Refraction of colours
Question wording verified against source paper
Answer
Solution diagram

Exam answer
Draw both rays bending towards the normal in glass, with the blue ray bending more than the orange ray.
Explanation
Blue light has a higher refractive index in glass.
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