Question: Platinum has a work function of 6.35 eV, and iron has a work function of 4.50 eV. Light of frequency 1.88 1015 Hz ejects

Platinum has a work function of 6.35 eV, and iron has a work function of 4.50 eV. Light of frequency 1.88 × 1015 Hz ejects electrons from both of these surfaces.

(a) From which surface will the ejected electrons have a greater maximum kinetic energy? Explain.

(b) Calculate the maximum kinetic energy of ejected electrons for each surface?

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