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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Practice Set 1 > When radiation of wavelength λ is used to illuminate a metallic surface, the stopping potential is V. When the same surface is illuminated with radiation of wavelength 3λ, the stopping potential is V/4 . If the threshold wavelength for the metallic surface is n lamba then value of n will be ……….

When radiation of wavelength λ is used to illuminate a metallic surface, the stopping potential is V. When the same surface is illuminated with radiation of wavelength 3λ, the stopping potential is V/4 . If the threshold wavelength for the metallic surface is n lamba then value of n will be ……….

the stopping potential is V. When the same surface is illuminated with radiation of wavelength 3λ the stopping potential is V/4 . If the threshold wavelength for the metallic surface is n lamba then value of n will be .......... When radiation of wavelength λ is used to illuminate a metallic surface