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?

B

(ii) Explain why the other points on the wall are not lit up by the lamp.

Light travels in straight lines and light will not pass through the cardboardas it is opaque. The other points are in the shadow of the cardboard

2 marks

(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

Green

(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

Q

Maximum 4 marks