Mathilda Collects Photoelectric Data in Her Physics Laboratory

question 38

Short Answer

Mathilda collects photoelectric data in her physics laboratory. She measures a stopping potential of 5.82 volts for radiation of wavelength 100. nm, and 17.99 volts stops 50.0 nm.
(a) What is the work function for the material in eV?
(b) From her data one determines Planck's constant to be what?

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