SAT Subject Physics Practice Question 279: Answer and Explanation

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Question: 279

50. In the diagram accompanying each question, representative light rays from an illuminated object (labeled “O” in the diagrams) interact with an optical device (or devices): a mirror, a lens, or a combination of both. In each case, identify the optical device(s)—from among the choices below—that is/are most likely in the dotted box.

A. Plane mirror
B. Converging lens
C. Diverging lens
D. Plane mirror and a converging lens
E. Plane mirror and a diverging lens

Correct Answer: C


The ray diagram is consistent with a diverging lens as the optical device, forming an upright, virtual image on the same side of the lens as the object.

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