Q. For the myopic eye, the defect cured by
A) Convex lens
B) Concave lens
C) Cylindrical lens
D) Toric lens
Explanation
(b) In myopia, $u = \infty,\ v = d =$ distance of far point
By $\frac{1}{f} = \frac{1}{v} - \frac{1}{u},$ we get $f = - d$
Since $f$ is negative, hence the lens used is concave
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.