GRE Subject Test: Physics : Mirrors

Study concepts, example questions & explanations for GRE Subject Test: Physics

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All GRE Subject Test: Physics Resources

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Example Questions

Example Question #1 : Mirrors

A reflective sphere has a diameter of . The surface of the sphere makes a convex spherical mirror; what is its focal point?

Possible Answers:

Correct answer:

Explanation:

The focal length of a spherical mirror is one half of the radius, which is one quarter of the diameter. In the case of convex mirrors, the focal point is considered behind the surface, which gives the answer its negative sign.

All GRE Subject Test: Physics Resources

33 Practice Tests Question of the Day Flashcards Learn by Concept
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