Question

power of a lens is 2 dioptre. what does it mean? solve the problem​

Answer 1

Answer:

1/2

Explanation:

1 dioptre of power of a lens is described as the unit of measurement of the optical power of a lens or curved mirror equivalent to the reciprocal of focal length (f). Measurement of the focal length in a meter. The SI unit of power of lens is dioptre whose focal length is one meter, which is denoted by the letter D.