Q6. A ray of blue light falls on a glass prism as shown in the diagram.
(a) On the diagram, draw the path of the blue ray through the prism and from the prism to the screen. Use a ruler.
2 marks
(b) The blue ray is replaced by a ray of white light.
(i) What would you now see on the screen?
1 mark
A red filter is placed between the prism and the screen.
(ii) What would you now see on the screen?
(iii) Explain how the red filter causes the change.
2 marks
Maximum 5 marks
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