A) + 8/3 D
B) + 3 D
C) ? 3 D
D) ? 8/3 D
Correct Answer: A
Solution :
For improving near point, convex lens is required and for this convex lens \[u=-\,25\ cm,\] \[v=-\,75\ cm\] \[\therefore \frac{1}{f}=\frac{1}{-75}-\frac{1}{-25}\Rightarrow f=\frac{75}{2}cm\] So power \[P=\frac{100}{f}=\frac{100}{75/2}=+\frac{8}{3}D\]You need to login to perform this action.
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