A) 65 cm
B) 60 cm
C) 55 cm
D) 75 cm
Correct Answer: C
Solution :
[c] For lens, let image distance is v, then \[\frac{1}{v}-\frac{1}{-20}=\frac{1}{15}\] \[v=60cm\] Since object coincides with image, center of curvature of mirror must coincide with image of convex lens so that rays fall normally on mirror and then return along their original path \[R=60-5=55cm\].You need to login to perform this action.
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