Categories > Dual Nature of Radiation and Matter > Photon and Photoelectric Effect > When radiation of wavelength $\lambda $ is incident on a metallic surface, the stopping potential is 4.8 volts. If the same surface is illuminated with radiation of double the wavelength, then the stopping potential becomes 1.6 volts. Then the threshold wavelength for the surface is

Dual Nature of Radiation and Matter

Question: When radiation of wavelength $\lambda $ is incident on a metallic surface, the stopping potential is 4.8 volts. If the same surface is illuminated with radiation of double the wavelength, then the stopping potential becomes 1.6 volts. Then the threshold wavelength for the surface is


1) $2\lambda $
2) $4\lambda $
3) $6\lambda $
4) $8\lambda $
Solution: Explanation: No Explanation
Photon and Photoelectric Effect

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