Light with an average flux of 20 W cm2 falls on non

Last updated: 6/11/2023

Light with an average flux of 20 W cm2 falls on non reflecting surface at normal incidence having surface area 20 cm The energy received by th surface during time span of 1 minute is 1 48 x 10 J 2 10 10 J 3 12 x 10 J 4 24 x 10 J