| (i) Focal length of the lens is 40 cm. |
| (ii) Focal length of the lens is - 40 cm. |
| (iii) Nature of the lens is concave. |
| (iv) Nature of the lens is convex. |
| (v) She is suffering from myopia. |
A) Only (i) and (iv) are correct.
B) Only (ii) and (iii) are correct.
C) Only (i) (iii) and (v) are correct.
D) Only (ii) and (iii) are correct.
Correct Answer: A
Solution :
Power = 2.5 D. \[\therefore \] It is a hypermetropic eye. This is positive so lens is convex. \[\therefore \]Focal length \[f=\frac{1}{D}=\frac{1}{2.5}m=0.4\,m\] or 40 cm.
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