Why there is a threshold frequency in photoelectric effect?
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The photoelectric effect occurs when light above a certain frequency (the threshold frequency) is shone on metals like zinc, this causes electrons to escape from the zinc. ... the frequency of the light needed to reach a particular minimum value (depending on the metal) for photoelectrons to start escaping the metal.
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The photoelectric effect occurs when light above a certain frequency (the threshold frequency) is shone on metals like zinc, this causes electrons to escape from the zinc. the frequency of the light needed to reach a particular minimum value (depending on the metal) for photoelectrons to start escaping the metal.
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