Question

Einstein’s photoelectric equation is $E_{k}$ = hv - Φ. In this equation $E_{k}$ refers to(a) kinetic energy of all the emitted electrons(b) mean kinetic energy of emitted electrons(c) maximum kinetic energy of emitted electrons(d) minimum kinetic energy of emitted electrons

Answer 1

option C should be the answer because k.E is the energy of that electron which is at the end of that metal plate and only requires work function to get off from that metal .