(a(i))[2]
On Fig. 6.1, starting from point X, draw a red ray labelled R and a violet ray labelled V to illustrate the formation of a spectrum on the screen.
(a(ii))[1]
State the colour of visible light with the shortest wavelength.
(b(i))[1]
State the meaning of monochromatic light.
(b(ii))[2]
Describe and explain what happens to the ray of light in Fig. 6.2 when it meets side AC of the prism.
(b(iii))[3]
Describe and explain what happens to the ray of light in Fig. 6.3 as it meets the glass at point Y.