(a(i))[1]
On Fig. 5.1, carry the ray on through the glass prism until it reaches a boundary between glass and air.
(a(ii))[1]
On Fig. 5.1, draw and label the normal at the point where your ray meets the boundary between glass and air.
(a(iii))[2]
Continue the ray until it emerges into the air.
(b(i))[2]
On Fig. 5.2, supply the missing colour names.
(b(ii))[1]
State the property of visible light that increases in the direction of the arrow in Fig. 5.2.