Question

a doctor has prescribed a corrective lens of power + 1.5 D find the focal length of the lens if the prescribed lens diverging or converging ​

Answer 1

Answer:

Explanation:

p = 1/ f

= 1/1.5

=  + 0.66 m

as focal length is positive it is a convex lens which is a converging lens

Answer 2

$\large\mathcal\orange{Power \:\:of\:\: lens (P) = 1/f}$

→P = 1.5D

→f = 1/1.5 = 10/15 = 0.66 m

A convex lens has a positive focal length. Therefore, it is a convex lens or a converging lens.