Answer:
The focal length of the lens is 34.047 cm
The power of the needed corrective lens is 2.937 diopter.
Explanation:
Distance of the object from the lens,u = 26 cm
Distance of the image from the lens ,v= -110 cm
(Image is forming on the other side of the lens)
Since ,lens of the human eye is converging lens,convex lens.
Using a lens formula:
[tex]\frac{1}{f}=\frac{1}{u}+\frac{1}{v}[/tex]
[tex]\frac{1}{f}=\frac{1}{26 cm}+\frac{1}{-110 cm}[/tex]
f = 34.047 cm = 0.3404 m
Power of the lens = P
[tex]P=\frac{1}{f}=\frac{1}{0.34047 m}=2.937 diopter[/tex]
