Question: Zinc has a work function of (4.3 mathrm{eV}). a. What is the longest wavelength of light that will release an electron from a zinc surface?

Zinc has a work function of \(4.3 \mathrm{eV}\).

a. What is the longest wavelength of light that will release an electron from a zinc surface?

b. A \(4.7 \mathrm{eV}\) photon strikes the surface and an electron is emitted. What is the maximum possible speed of the electron?

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