(a(i))[1]
State the name of the process that splits the colours in white light.
(a(ii))[1]
State the colour of the light on the screen at point A and at point B.
(a(iii))[1]
State the property of the prism glass that makes white light split into the different colours of the spectrum.
(b(i))[1]
On Fig. 5.2, extend the path of the ray of light to the end of the fibre.
(b(ii))[2]
Calculate the critical angle of the material of the fibre.
(b(iii))[2]
State two uses of optical fibres.