Question

What do you mean by the focal point of spherical refracting surface? ​

Answer 1

Answer:

focal point is the point where the light Ray's converge ir diverge depending upon the reflecting surface

Answer 2

Answer:

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.