JEE Main 2024 Physics question
When UV light of wavelength 300 nm is incident on the metal surface having work function 2.13 eV, electron emission takes place. The stopping potential is: (Given hc = 1240 eV nm)
Answer: (C)
Solution
E = 1240/300 = 4.13 eV; eV₀ = 4.13 − 2.13 = 2.0 eV.