MHT CET Physics question
Work function for caesium metal is 2.14 eV. Let a beam of light of frequency Hz be incident over the metal surface. Now, match the following columns and mark the correct option from the codes given below. Column I A. Maximum KE of emitted photoelectrons (in eV) B. Minimum KE of emitted photoelectrons (in eV) C. Stopping potential of material (in mV) is D. Maximum speed of the emitted photoelectrons (in ) Column II 1. 348 2. 345 3. 0.345 4. 0
Answer: (B)
Solution
eV, so eV (A-3); the minimum KE of emitted electrons is 0 (B-4); V mV
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