a spherical mirror and a spherical lens both have a focal length of -15 cm. identify the type of lens and mirror and justify your answer.
Asked by Shantanu | 12th Feb, 2012, 06:32: PM
since the focal length is negative i.e. f=-15 cm ,the spherical lens is concave lens as the focal length is negative for diverging lens and in case of mirrors, it is convex mirror where the focal length is negative.
Answered by | 12th Feb, 2012, 09:46: PM
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