When ultraviolet light with a wavelength of 400 nmfalls on a certain metal surface, the maximum...

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When ultraviolet light with a wavelength of 400 nmfalls on a certain metal surface, the maximum...

When ultraviolet light with a wavelength of 400 nmfalls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is 1.10 eV .

What is the maximum kinetic energy K0 of the photoelectrons when light of wavelength 270 nmfalls on the same surface?

Use h = 6.63×10^?34J?s for Planck's constant and c = 3.00×10⁸m/s for the speed of light and express your answer in electron volts.

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Answer 1

Answer #1

The work fuaction of the photoelectrons is hc 1240 eV nm -1.10 ev 400 nm =2eV The mazimum kinetic energy K0 of the photoelect

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