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 \[P={{P}_{1}}+{{P}_{2}}=12-2=10D\] 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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