MHT CET 2026 Physics question
An electron in the hydrogen atom jumps from nth energy state to the ground state. The wavelength so emitted illuminates a photosensitive material having work function 2.65 eV. If the maximum kinetic energy of the emitted photoelectrons is 10.1 eV, then the value of 'n' is
Answer: (C)
Solution
Photoelectric equation: eV. The photon is emitted in the transition from level to the ground state: . So \frac{1}{n^2}\frac{12.75}{13.6}$ = 0.9375 =
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