Physics Review Question

Unit: Motion in a plane
Year: 1992 Question#: 93
Question: Which ray diagram is incorrect?

(2 )

(3 )

(4 )

What is this question really asking?

Explanation by: David B

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Answer 1

Answer 1 is Incorrect

This is a correct diagram of what would happen if light rays were reflected through a converging lens. Since the question asks for which diagram is incorrect this is the wrong answer.
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Answer 2


Answer 2 is also a correct ray diagram. return to top

Answer 3


This answer is incorrect because it is a correct ray diagram for a diverging lens. return to top

Answer 4


This is correct because it is an incorrect ray diagram for light rays refracted through a diverging lens from an image at the focus. return to top

What's this question really asking?

The question is asking what effect do converging and diverging lenses have on principal light rays when the image is at different points with respect to the focus. return to top

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