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When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface,
the maximum kinetic energy of the emitted photoelectrons is 1.10 eV.
Part A
What is the maximum kinetic energy Ko of the photoelectrons when light of wavelength 260 nm falls on the same surface?
Use h = 6.63x10-34 J. s for Planck's constant and c = 3.00x10° m/s for the speed of light and express your answer in electron volts.

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