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Question
White light is shined on a metal surface that exhibits the photoelectric effect according to the graph as shown for each component of white light. Identify the colour(s) correspond to the threshold frequency of the metal?
White light is shined on a metal surface that exhibits the photoelectric effect according to the graph as shown for each component of white light. Identify the colour(s) correspond to the threshold frequency of the metal?
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Solution
The correct option is D blue only
As per photoelectric experiment it was observed that the metal would not emit electrons unless a light of particular frequency is shined of its surface. This frequency is called the threshold frequency of the metal.
From the given graph it can be observed that unless the incident light frequency reaches that of blue, there are no electrons that begin to get emitted. Thus frequency of blue is the threshold frequency of the metal.
Option D is correct.
As per photoelectric experiment it was observed that the metal would not emit electrons unless a light of particular frequency is shined of its surface. This frequency is called the threshold frequency of the metal.
From the given graph it can be observed that unless the incident light frequency reaches that of blue, there are no electrons that begin to get emitted. Thus frequency of blue is the threshold frequency of the metal.
Option D is correct.
Option D is correct.
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