CBSE Class 12-science Answered
Two identical thin planoconvex lenses of refractive index n are silvered, one on the plane side and other on the convex side. What is the ratio of their focal lenghts?
Asked by akankshyasahu | 05 May, 2011, 04:58: AM
Expert Answer
When the planoconvex lense is painted on the convex side, then their focal length will be
When the planoconvex lense is painted on the plane side, then their focal length will be
Answered by | 07 May, 2011, 12:31: AM
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