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question 1) In a Photoelectric experiment light of wavelength 300nm is incident on cesium work function...

question 1) In a Photoelectric experiment light of wavelength 300nm is incident on cesium work function ϕ = 2.23eV

Find Max Kinetic Energy

question 2) An unknown atom has ground state Energy Formula -7.2 eV / n^2 . If an electron releases a photon and goes from the 4th excited state to the 1st excited state find the wavelength of the photon

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