What is the maximum wavelength, in nm, of light that can eject an electron from a metal with Φ = 1.25 x 10^(-19) J?
Added by Marco A.
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In this case, Φ = 1.25 x 10^(-19) J. The energy of a photon of light is given by the equation E = hc/λ, where E is the energy of the photon, h is Planck's constant (6.626 x 10^(-34) J·s), c is the speed of light (3.00 x 10^8 m/s), and λ is the wavelength of the Show more…
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