Question

what is power of lence​

Answer 1

Power of lens is the tendency of a lens to converge or diverge the rays is known as power of lens. ... The ability of a lensto converge or diverge the upcoming rays is called its power of lens. Also, mathematically it can be defined as the reciprocal of focal length of a lens. It's SI unit is Dioptre.

Answer 2

- The power of a lens is the reciprocal of its focal length .

- Its S.I unit is Diopter (D).

- Power = 1/focal length .