Light emitted during the deexcitation of an electron from $n = 3$ to $n = 2$, when incident on a metal, causes photoelectrons to just be emitted from that metal. In which of the following deexcitations is the photoelectric effect not possible?

Question

From $n = 2$ to $n = 1$

From $n = 3$ to $n = 1$

From $n = 5$ to $n = 2$

From $n = 4$ to $n = 3$

Solution

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