Kinetic Energy

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Ellie Tsang 1I
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Kinetic Energy

Postby Ellie Tsang 1I » Wed May 09, 2018 5:15 pm

In the textbook, it says "The kinetic energy of the electron ejected from the metal increases linearly with
the frequency of the incident radiation according to Eq. 5." Why doesn't a higher frequency light emit electrons with higher kinetic energies? This is from Worksheet 3 - Quantum World Part 2 #9d.

Tiffany Chen 1A
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Re: Kinetic Energy

Postby Tiffany Chen 1A » Wed May 09, 2018 5:22 pm

It's because this isn't always true, kinetic energy also depends on what the threshold energy or work function is.

Alexis Bravo 1D
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Joined: Tue Nov 14, 2017 3:01 am

Re: Kinetic Energy

Postby Alexis Bravo 1D » Sun May 13, 2018 10:31 pm

This isn’t true because even though it is possible for kinetic energy to increase as frequency increases, that’s not always the case depending on what the threshold energy, since kinetic energy only increases after surpassing the threshold energy.


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