Answer
f = (3 x 10$^{8}$ ) (1.06 x 10$^{-5}$) = 2.83 x 10$^{13}$
= E hf
E = (6.626 x 10$^{-34}$) x (2.83 x 10$^{13}$)
= 1.88 x 10$^{-20}$ J
Total Energy = Energy of 1 Photon x No. of Photons
No. of Photons = Total Energy / Energy of 1 Photon
= 1J / 1.88 x 10$^{-20}$ J
= 5.32 x 10$^{19}$
Work Step by Step
As given in answer
