A substance absorbs electromagnetic radiations of wavelength 12.3 nm and then emits another
Channel: Doubtnut
Date: 2020-04-19

A substance absorbs electromagnetic radiations of wavelength 12.3 nm and then emits another electromagnetic radiations of wavelength 24.6 nm . If ratio of number of photons absorbed to number of photons emitted is `2:1` then ratio of energy absorbed to energy emitted will be :