Question

द पावर ऑफ कन्वर्जिंग लेंस इज​

Answer 1

Optical power (also referred to as dioptric power, refractive power, focusing power, or convergence power) is the degree to which a lens, mirror, or other optical system converges or diverges light. It is equal to the reciprocal of the focal length of the device: P = 1/f.

in hindi it is called as :-

प्रकाशीय शक्ति

प्रकाशीय शक्तिprakaasheey shakti