ComedkRay OpticsCOMEDK 2025 Morning ShiftMCQ+1 / -02025One surface of a lens is convex and the other is concave. If the radii of curvatures are $R$ and $r$ respectively, the lens will be convex ifA $R >r$B $R< r$C $R=\frac{1}{r}$D $R=r$Check AnswerClear SelectionReveal AnswerShow Explanation
