The cutoff (or threshold) wavelength for a metal is found to be 263 nm. (a) Calculate the work function for this metal. eV (b) The metal is illuminated by light of wavelength 238 nm. Calculate the maximum kinetic energy of the emitted electrons. Remember that the maximum kinetic energy is the kinetic energy when the electrons are at the cathode. eV (c) Express this energy in joules. J (d) Calculate the maximum velocity of the emitted electrons. m/s
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63 \times 10^{-34} \text{ Js}$), $c$ is the speed of light ($3 \times 10^8 \text{ m/s}$), and $\lambda$ is the cutoff wavelength (263 nm). Show more…
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