Question

A doctor prescribed a corrective lens of power \(+1.5\text{ D}\). Determine the focal length of the lens. Is the prescribed lens diverging or converging?

Hint:

Positive Power (\(+\text{D}\)) \(\rightarrow\) Convex Lens \(\rightarrow\) Converging Lens \(\rightarrow\) Corrects Hypermetropia.
Negative Power (\(-\text{D}\)) \(\rightarrow\) Concave Lens \(\rightarrow\) Diverging Lens \(\rightarrow\) Corrects Myopia.

Answer 1