If the work function of a certain metal is $\text{3}\text{.2}\times {\text{10}}^{\text{-19}}\text{J}$  and it is a illuminated with light of frequency $\text{10}\times {\text{10}}^{\text{14}}\text{Hz,}$  the maximum kinetic energy of photo electrons would be$\text{(h = 6}\text{.6}\times {\text{10}}^{\text{-34}}\text{Js)}$