Photoelectric emission is observed from a surface for frequencies `v_1` and `v_2` of the incident
Channel: Doubtnut
Date: 2020-01-19

Photoelectric emission is observed from a surface for frequencies `v_1` and `v_2` of the incident radiation `(v_1 gt v_2)`. If the maximum kinetic energies of the photoelectrons in two cases are in ratio `1 : K` then the threshold frequency `v_0` is given by.