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 |  473

1 Answer

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

Related Questions

An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed so that a sharply focused image can be obtained? Find the size and the nature of the image.

Class 10 Science Light Reflection and Refraction View Answer

An object 5 cm is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 30 cm. Find the position, nature, and size of the image.

Class 10 Science Light Reflection and Refraction View Answer

An object is placed at a distance of 10 cm from a convex mirror of focal length of 15 cm. Find the position and nature of the image.

Class 10 Science Light Reflection and Refraction View Answer