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Light emitted as ______________
(___________ ___________)
II. Explaining photoelectric effect using quantum theory
A. ______________ Theory
1) atoms can only _____________ or
________ ______________ in ___________
amounts called __________ (___________________)
2) Energy of each quanta is proportional to frequency of
radiation
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h = plancks constant = _____________________
E
= ________
B) Einstein explains photoelectric effect
1) Relationship between _____________________ and ________________ explained.
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Bright Light
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Dim Light |
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(_______________________) |
(_______________________) |
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______ __________________ Light |
______ __________________ Light |
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(_______________________) |
(_______________________) |
Brightness - measure of __________________________________
Frequency - measure of
__________________________________
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| Photon Energy = 5 eV |
KE = 2 eV |
** eV - _______________ - unit of _______________
How much work did this photon have to do to remove the electron?
Answer - _________
