MCQ
For the myopic eye, the defect is cured by
- AConvex lens
- ✓Concave lens
- CCylindrical lens
- DToric lens
✓
Answer
Correct option: B.
Concave lens
b
(b) In myopia, $u = \infty ,$ $v = d = $ distance of far point
(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.
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