Question

power of lens is numerically defined as the reciprocal of it's​

Answer 1

Answer:

Power of a lens is ability of the lens to converge the beam of light falling on it. Numerically, power of a lens is reciprocal of focal length of the lens, i.e., P=1f. For a convex lens, f is , p is + For a concave lens, f is - , P is negative.

Answer 2

Answer:

focal length.........