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Questions on Light

Q13. The diagram shows two rays of light coming from a point source, reflecting in a plane mirror, and entering a person's eye. The person sees an image of the light source at a point behind the mirror.

(a) On the diagram, draw construction lines to find the position where the image appears. Label the image I.

1 mark

(b)

(i) The person moves further away from the mirror. How does this affect the position of the image relative to the mirror?

1 mark

(ii) The point source of light is moved closer to the mirror, How does this affect the position of the image?

1 mark

The diagram below shows two rays of light coming from a small fish in some water. The rays enter a person's eye.

(c) The person sees an image of the fish under the water. On the diagram, draw construction lines to find the position of the image. Label the image I.

1 mark

(d) In some parts of the world, people catch fish using spears. When they see the image of a fish in the water, where should they aim?

1 mark

Maximum 5 marks