MHT CET 2026 Physics question
For a photosensitive material, work function is 'W' and stopping potential is 'V'. The wavelength of the incident radiation is (h=Planck's constant, c = velocity of light, e = electronic charge)
Answer: (B)
Solution
By Einstein's photoelectric equation, the energy of the incident photon is shared between the work function and the maximum kinetic energy of the photoelectron: . The stopping potential gives . Therefore
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