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Photoelectric effect: The maximum energy of photoelectrons from the aluminum is 2.3eV for radiation of 200nm...

Photoelectric effect:

The maximum energy of photoelectrons from the aluminum is 2.3eV for radiation of 200nm and 0.90eV for radiation of 258nm.
(a) Calculate Planck’s constant
(b) Calculate the work function of aluminum.
(c) If the light wavelength of 330nm is irradiated on the aluminum, what would happen? Explain the answer with the meaning of the photoelectric effect.

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