Physics, 29.11.2019 04:31 tiaragirl923
When light of wavelength 345 nm falls on a potassium surface, electrons are emitted that have a maximum kinetic energy of 1.67 ev. what is the work function of potassium? the speed of light is 3 × 108 m/s and planck’s constant is 6.63 × 10−34 j · s.
Answers: 3
the frequency of the light and W the work function of the element.
. Replacing (2) in (1) and solving for W:
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When light of wavelength 345 nm falls on a potassium surface, electrons are emitted that have a maxi...
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