A) \[8\,\,D,\,\,0.8\,\,m,\]convex
B) \[14\,\,D,\,\,0.5\,\,m,\]convex
C) \[5\,\,D,\,\,0.2\,\,m,\]convex
D) \[10\,\,D,\,\,0.1\,\,m,\]convex
Correct Answer: D
Solution :
Given:\[{{P}_{1}}=12D,\,\,{{P}_{2}}=-2D\] Power of combination \[P={{P}_{1}}+{{P}_{2}}=12-2=10\,\,D\] Focal length\[f=\frac{1}{P}=\frac{1}{10}m=0.1\,\,m\] The combined lens will be convex (convergent)You need to login to perform this action.
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