MHT CET 2026 Physics question
Light of wavelength '' which is less than threshold wavelength is incident on a photosensitive material. If incident wavelength is decreased so that emitted photoelectrons are moving with some velocity then stopping potential
Answer: (B)
Solution
By Einstein's photoelectric equation, , where is the work function. Decreasing the incident wavelength increases the photon energy , so the maximum kinetic energy of the emitted photoelectrons increases and hence the stopping potential increases,
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