(a) Peter tried to obtain a mixture of red and green light.
He used white light from a spotlight and slotted a red filter and a green filter in front of it as shown below.
The diagram below represents Peter’s experiment.
(i) No light reached the screen. Explain why.
2 marks
(ii) Peter cut a circular hole in the green filter. Describe what Peter would see on the screen.
1 mark
(b) Peter used two spotlights to shine a mixture of red and green light on to some red curtains.
(i) What colour did the red curtains appear in this light?
(ii) Give the reasons why they appeared this colour.
