Question

What is a power of lens? short answer

Answer 1

Answer:

If a lens has a shorter focal length it is said to be more powerful. The power of a lens is defined as the reciprocal of the focal length. Lens power is measured in dioptres (D).

Hope it helps;)

Answer 2

Explanation:

the power of a lens is defined as the reciprocal of its focal length.

P=1/f