UPSEE Solved Model Paper 2
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When a metallic surface is illuminated by a light of wavelength λ, the stopping potential for the photoelectric current is 3 V. When the same surface is illuminated by a light of wavelength 2 λ, the stopping potential is 1 V. The threshold wavelength for this surface is
When a metallic surface is illuminated by a light of wavelength λ, the stopping potential for the photoelectric current is 3 V. When the same surface is illuminated by a light of wavelength 2 λ, the stopping potential is 1 V. The threshold wavelength for this surface is
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