MHT CET 2023 Physics question
Light of frequency 1.5 times the threshold frequency is incident on photosensitive material. If the frequency is halved and intensity is doubled, the photocurrent becomes
Answer: (D)
Solution
Initially the incident frequency is , which exceeds the threshold frequency , so photoelectrons are emitted. After halving, . Since the frequency is now below the threshold frequency, the photon energy and no photoelectron can be
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