physics question 8 hw 20

label Physics
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In an experiment, light of a particular wavelength is incident on a metal surface, and electrons are emitted from the surface as a result. To produce electrons with higher kinetic energy per electron, the experimenter should do which of the following?

1.Decrease the wavelength of the light

2.. Decrease the intensity and increase the wavelength of the light

3.Increase the wavelength of the light

4.. Increase the intensity and the wavelength of the light

5. None of these

Jul 14th, 2015

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The right answer is .......... 4

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Jul 14th, 2015

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