Question

Please help me with this physics question​

Answer 1

Answer:

1.Power of lens is recipeocal of its focal length, it is measured in "dioptre".

2."+Ve" sign in power is used for convex lens and vice-versa.

3.+10D means- a convex lens with 0.1 focal length.

And -10D means a concave lens with -0.1 focal length.

Explanation:

Hope it may helps u

Sry for late answer because I love physics