What is the work function of the surface

Reference no: EM13497160

Electrons are ejected from a metallic surface with speeds ranging up to 4.5 105 m/s when light with a wavelength of ? = 625 nm is used.

(a) What is the work function of the surface?

_______eV

(b) What is the cutoff frequency for this surface?

_______Hz

Reference no: EM13497160

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