# Work Function of a Material

Red light of wavelength 670 nm produces photoelectrons from a certain photoemissive material. Green light of wavelength 513 nm produces photoelectrons from the same material with 1.68 times the maximum kinetic energy. What is the material's work function?

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#### Solution Preview

Please see attachment for equations.

Say, two lights of wavelengths (lambda-1) and (lambda-2) are incidenting on a photo metal of work function 'W' such that for the first light, the maximum kinetic energy is KE-1 and for the second one the kinetic energy is KE-2, ...

#### Solution Summary

Provides steps necessary to calculate the material's work function.

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