Question

what is focal power of lens of mirror​

Answer 1

Explanation: Focal power of a spherical mirror or lens:It is the degree to which a lens or mirror diverges or converges a light. Power of a lens or mirror is defined as reciprocal of focal length of a mirror or lens. If the focal length is large then the power of lens or mirror is small

Answer 2

Answer:

Explanation:

Power of a lens is defined as reciprocal of focal length of a  lens.

If the focal length is large then the power of lens  is small.

If the focal length is small then the power of lens  is large.

Mathematical representation,

f=Focal length (in meter)

S.I unit of power is Diopters.