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pHOTOeLECTRIC eFFECT

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pHOTOeLECTRICeFFECT

Threshold frequency, fo, is the minimum frequency of light needed to get electrons to leave a plate (photoemmission). Every metal has a different thershold frequency. It appears as the x-intercept in the last graph below.

Work function

E = h fo

the minimum energy of light needed to get electrons to leave a plate (photoemmission