Question bank/JEE Main/Physics

When a metallic surface is illuminated with monochromatic light
of wavelength [IMAGE] the stopping potential is
[IMAGE] When the same surface is illuminated with light
of wavelength [IMAGE] the stopping potential is
[IMAGE] Then the work function of the metallic surface
is $\frac{hc}{x\lambda},$ where value of x

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Source: Grass-G / P-15 Physics paper 11 Nov.docx