E = hf + Wo
E = 1.12 x 10−18J
Max. Energy = 8.0 x 10−19J.
Wo = E - Max. Energy = 1.12 x 10−18J - 8.0 x 10−19J. = 3.2 x 10−19J.
But Wo = hfo
fo = Woh = 3.2×10−196.626×10−34 = 4.83 x 1014Hz
