Question

Power of a convex lens is 2D. Its focal length will be



please full solution please​

Answer 1

Answer:

sorry I don't know sorry

Answer 2

Answer:

50cm.

Explanation:

Power of a lens is -2D, negative sign indicates it is a Concave lens. Focal length (in meters)=1/power of the lens, thus focal length=1/2=0.5m=50cm.