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Questions on Light

Q9. A pupil is observing the behaviour of a woodpecker. He uses a periscope to look over a wall at a tree, and waits for the bird to land on the trunk. The pupil can only watch one part of the tree trunk at a time.

(a) Which point on the tree trunk which he can see using the periscope in the position shown.

1 mark

(b) Draw the path for a ray of light on the diagram to show how the pupil sees this point.

3 marks

(c) What should the pupil do to the periscope to watch point C?

1 mark

Maximum 5 marks