(a(i))[1]
Find the angle of reflection for the light ray at point X.
(a(ii))[2]
On Fig. 7.1, add the normal at point X, mark it with the letter N, and sketch the ray reflected from point X.
(b(i))[1]
Work out the focal length of the lens.
(b(ii))[1]
Find the distance of the image from the lens.
(b(iii))[2]
State the characteristics of the image formed by the lens in Fig. 7.2.