A stopping potential of 0.82 volt is required to stop the photoelectrons emitted from a metallic surface by light of wavelength 4000 Å. The stopping potential for wavelength 3000 Å will be :

A stopping potential of 0.82 volt is required to stop the photoelectro

1.	A stopping potential of 0.82 volt is required to stop the photoelectrons emitted from a metallic surface by light of wavelength 4000 Å. The stopping potential for wavelength 3000 Å will be :
Answer» 1.85 V 2.85 V 3.0 V 4.1 V. Solution :`0.82eV=(12375)/(4000)-phi_(0)` `:. Phi_(0)=227eV` Also `eV_(S)=(12375)/(3000)-2.27` Then `V_(S)=185V`.

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A stopping potential of 0.82 volt is required to stop the photoelectrons emitted from a metallic surface by light of wavelength 4000 Å. The stopping potential for wavelength 3000 Å will be :

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