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 | 5th 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  | 7th May, 2011, 12:31: AM

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