7. When Light of frequency of 1.00 x 10^15Hz strikes a sodium surface. The ejected photoelectron

Question

Sri K · Accepted Answer

1. We know the energy of the incident light is given by E = hf, where h is Planck&#x27;s constant and

7. When Light of frequency of 1.00 x 10^15Hz strikes a sodium surface. The ejected photoelectrons are found to have a maximum kinetic energy of 1.78 ev. Find the threshold frequency for this metal? h= Planck's constant = 6.63 x 10^-34 j. s 1e.v = 1.6x10^-19j