When a certain metalic surface is illumi...

When a certain metalic surface is illuminated with monochromatic light of wavelength `lamda` the stopping potential is `V_0` When the same surface is illuminated with light of wavelength `2lambda`, the stopping potential `frac(V_0)(4)`./ If the velocity of light in air is C, then find threshold frequency. Write down de Brogile hypotesis.

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MODEL PAPER SET-02
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When a metallic surface is illuminated with radiation of wavelength lamda , the stopping poential is V. If the same surface is illuminated with radiation of wavelength 2lamda , the stopping potential is V/4 . The threshold wavelength for the metallic surface is

A certain, metallic surface is illuminated with monochromatic light of wavelength, lamda . The stopping potential for photoelectric current for this light is 3 V_(0) . If the same surface is illuminated with light of wavelength 2lamda , the stopping potential is V_(0) . The threshold wavelength for this surface for photoelectric effect is

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For a monochromatic light incident on a metal surface, the stopping potential is V. Then the kinetic energy of the fastest photoelectrons emitted from that surface is

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