A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?

Asked by Vishal kumar | 2 years ago |  451

##### Solution :-

Power of lens (P) = $$\frac{I}{f}$$

P = 1.5D

$$f = \frac{1}{1.5}=\frac{10}{15}=0.66m$$

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

Answered by Shivani Kumari | 2 years ago

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