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Photoelectric emission is observed from a metallic surface for frequencies `v_(1)` and `v_(2)` of the incident light rays `(v_(1) gt v_(2))`. If the maximum values of kinetic energy of the photoelectrons emitted in the two cases are in the ratio of `1 : k` , then the threshold frequency of the metallic surface is

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

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Photoelectric emission is observed from a surface for frequencies v_(1) and v_(2) of incident radiations (v_(1) gt v_(2)) . If the maximum kinetic energy of photoelectrons in the two cases are in the ratio of 2 : 1 then threshold frequency v_(0) is given by.

Photoelectric emission is observed from a surface for frequencies v_(1) and v_(2) of incident radiations (v_(1) gt v_(2)) . If the maximum kinetic energy of photoelectrons in the two cases are in the ratio of 2 : 1 then threshold frequency v_(0) 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: