The spectrum of white light is made up of seven colours.
Fig. 7.1 shows a partially-completed spectrum. Two labels are missing.
(i) On Fig. 7.1, write the name of the missing colour in each blank space.
[2]
(ii) On Fig. 7.1, indicate the direction of increasing wavelength for the spectrum. Draw an arrow in the box below the spectrum of colours.
[1]
A ray of red light strikes one face of a triangular glass prism as shown in Fig. 7.2.
(i) On Fig. 7.2, draw the path of the ray as it travels through the glass prism and enters the air.
[2]
(ii) State the term used to describe what happens to the ray of red light as it enters and leaves the prism.
[1]
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