The radii of curvatureof double convex l...

The radii of curvatureof double convex lens of glass `(mu = 1.5)` are in the ratio of `1 : 2`. This lens renders the rays parallel coming from an illuminated filament at a distance of `6 cm`. Calculate the radii of curvature of its surfaces.

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The correct Answer is:

4.5 cm, 9.0 cm

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