Q3. The diagram shows a lamp and a piece of cardboard. The piece of cardboard has a hole in it. Light from the lamp passes through the hole and forms a bright spot on a wall.
(a)
(i) Which point on the wall, A B, C, D or E, is lit up by the lamp?
1 mark
(ii) Explain why the other points on the wall are not lit up by the lamp.
1 mark
(b) A piece of transparent green plastic is placed over the hole.
What is the colour of the light which shines on the wall?
1 mark
(c) The diagram shows a ray of light from a lamp hitting a mirror.
Which arrow, P, Q, R or S, shows the reflected ray?
1 mark
Maximum 4 marks
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