Question
No of quantar ( =20 ) one quante enersy ( =600 ) J Total energy ( begin{aligned} & text { . } 600 times 20 &=12000 mathrm{J} end{aligned} ) then ( 120005=2.8680688 ) kilocalone.

one blue light liberating 20 quanta's and enesgy of each quanta is 600J then determine the total energy liberated in Jones and calories also
Solution
