A three level laser emits a light of wavelength 4500 The

Last updated: 6/26/2023

A three level laser emits a light of wavelength 4500 The temperature at which the ratio of the population reduces to half is a 46244 K b 37800 K c 32000 K d 84872 K Hint h 6 63 x 10 34 Joule sec k 1 38 x 10 23 Joule kelvin