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Questions on Light

Q6. The diagram below shows a light bulb X, a piece of card and a white screen. Two light rays have been drawn from the bulb to the screen. Five points, A, B, C, D and E, have been labelled on the screen.

(a) Give the letter of one point which is in shadow.

C or D

1 mark

(b) Bulb Y is added. The diagram below shows two light rays from each bulb.

(i) Which point on the screen will be in the darkest shadow? Give the letter.

C

1 mark

(ii) Give the letter of one point on the screen which will be lit up by both bulbs.

A or E

1 mark

(iii) Which point on the screen will be lit up by bulb X only? Give the letter.

B

1 mark

Maximum 4 marks