Chapter 23 Mirrors and Lenses Quick Quizzes 1.At C. ±²±±²³´µ±2.(c). Since n, the virtual image of the fish formed by refraction at the flat water surface is closer to the surface than is the fish. See Equation 23.9. waterairn>3.(a)False. A concave mirror forms an inverted image when the object distance is greater than the focal length. (b)False. The magnitude of the magnification produced by a concave mirror is greater than 1 if the object distance is less than the radius of curvature. (c)True. 4.(b). In this case, the index of refraction of the lens material is less than that of the surrounding medium. Under these conditions, a biconvex lens will be divergent.
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