Question

Define 1 dioptre of power of a lens.​

Answer 1

Answer:

1 dioptre power of lens means the rate of convergence or divergence by the lens is 1 diopter and the focal length of the lens is 1 metre so all the rays coming at it will converge from a distance of 1 metre or diverge and meet at a distance of 1 metre from it

Answer 2

1 Diopter power of a lens denotes that the focal length of le s is 1 meter.

since,

P = 1/f

Hope this helps !