Thershold frequency, `v_(0)` is the minimum frequency which a photon must
Channel: Doubtnut
Date: 2020-01-19

Thershold frequency, `v_(0)` is the minimum frequency which a photon must possess to eject an electron from a metal. It is different for different metals. When a photon of frequency `1.0xx10^(15)s^(-1)` was allowed to hit a metal surface, an electron having `1.988x10^(-19)J` of kinetic energy was emitted. Calculated the threshold frequency of this metal. equal to 600nm hits the metal surface.