1. The problem statement, all variables and given/known data I am wondering, what happens to those photons ( all having same energy level) in a light beam when the photons don't have enough energy to release the electrons in the metal that are more tightly attracted? Does the overall work function of the material decrease? 2. Relevant equations KE= h*f- Workfunction 3. The attempt at a solution At first glance, the eletrons in the material should become lessly attracted than before because when a light beam shines at an area, the temperature of that area increase. However, there's a rule that states that frequency below the lowest frequency of the light beam will not release the ANY electron no matter how long you shine the beam. So base on this, the electrons shouldn't become less attracted. But still, what happen to those electrons that don't have eneough energy to expell the electrons?