A) \[-3D\]
B) \[-\,8/3D\]
C) \[+3D\]
D) \[+\,8/3D\]
Correct Answer: D
Solution :
For Improving near point, a convex lens is required and for this convex lens. u = - 25 cm and v = - 75 cm \[\therefore \] \[\frac{1}{f}=\frac{1}{-75}-\frac{1}{-25}\Rightarrow f=\frac{75}{2}cm\] \[\therefore \]Power, \[P=\frac{100}{f}=\frac{100}{72/2}=+\frac{8}{3}D\]You need to login to perform this action.
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