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Hrishant Goswami Grade: 10
        Find the maximum kinetic energy of the photoelectrons ejected when light of wavelength 350 nm is incident on a cesium surface. Work function of cesium = 1.9 eV.
3 years ago

Answers : (1)

Deepak Patra
askIITians Faculty
474 Points
										Sol. λ = 350 nn = 350 * 10^-9 m

∅ = 1.9 eV
Max KE of electrons =- =hC/λ - ∅ = 6.63 * 10^-34 *3 * 10^8/350 * 10^-9 * 1.6 * 10^-19
= 1.65 ev = 1.6 ev.
3 years ago
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