MHT CET 2025 Physics question
Photoelectric emission takes place from a certain metal at threshold frequency v. If the radiation of frequency 4v is incident on the metal plate, the maximum velocity of the emitted photoelectrons will be (m = mass of photoelectron, h = Planck's constant)
Answer: (A)
Solution
The work function is (threshold frequency ). Einstein's equation: . Hence and , option (A).
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