Topic: Einstein's photoelectric equation, particle nature of light· Dual Nature of Matter and Radiation
When a metallic surface is illuminated with radiation of wavelength λ, the stopping potential is V. If the same surface is illuminated with radiation of wavelength 2λ, the stopping potential is V/4. The threshold wavelength for the metallic surface i…
When a metallic surface is illuminated with radiation of wavelength \(\lambda\), the stopping potential is V. If the same surface is illuminated with radiation of wavelength \(2\lambda\), the stopping potential is \(\frac{V}{4}\). The threshold wavelength for the metallic surface is :
1. \(4\lambda\)
2. \(5\lambda\)
3. \(\frac{5}{2}\lambda\)
4. \(3\lambda\)