[" Photo electric emission is observed from a "],[" surface for frequencies "iand " the KE in "],[" two cases are in ratio "1:K" ,then the "],[" threshold frequency "v" ,is given by "]

Photoelectric emission is observed from a surface when lights of frequency n_1 and n_2 if the ratio of maximum kinetic energy in two cases are1:K then (Assume n_1>n_2) threshold frequency is

Photoelectric emission is observed from a surface for frequencies v_(1) "and" v_(2) of the incident radiation (v_(1) gt v_(2)) . If maximum kinetic energies of the photo electrons in the two cases are in the ratio 1:K , then the threshold frequency is given by:

Photoelectric emission is observed from a surface for frequencies v_1 and v_2 of the incident radiation ( v_1 gt v_2 ) if maximum kinetic energies of the photo electrons in the two cases are in the ratio 1:K, then the threshold frequency is given by :

Photoelectric emission is observed from a surface for frequencies v_(1) "and" v_(2) of the incident radiation (v_(1) gt v_(2)) . If maximum kinetic energies of the photo electrons in the two cases are in the ratio 1:K , then the threshold frequency is given by:

Photoelectric emission is observed from a surface for frequencies v_1 and v_2 of the incident radiation ( v_1 gt v_2 ) if maximum kinetic energies of the photo electrons in the two cases are in the ratio 1:K, then the threshold frequency is given by :

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.

Photoelectric emission is observed from a metallic surface for frequencies v_(1) and v_(2) of the incident light. If the maximum value of kinetic energies of the photoelectrons emitted in the two cases are in the ratio n:1 then the threshold frequency of the metallic surface is