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April 18, 2014

Homework Help: Physics Please help out

Posted by Sheila on Wednesday, April 24, 2013 at 4:52pm.

Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied.



What would happen if the wavelength of the incident photons was tripled?

Would the energy be 4eV,so 12/3=4, and there will be no current flow? Is this correct? Please help!Thank you.

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