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A metal cathode shows no photoelectric effect when illuminated with green light. Which visible colours are likely to generate photocurrent?

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Question

A metal cathode shows no photoelectric effect when illuminated with green light. Which visible colours are likely to generate photocurrent?

Very Short Answer
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Solution

Blue, indigo and violet light are likely to generate photocurrent. Their frequencies are higher, and their photon energies are greater, than those of green light; they may therefore exceed the metal’s threshold frequency.

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Chapter 14: Dual Nature of Radiation and Matter - Intext Questions [Page 314]

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Balbharati Physics [English] Standard 12 Maharashtra State Board
Chapter 14 Dual Nature of Radiation and Matter
Intext Questions | Q 1. | Page 314
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