A metal surface illuminated by wavelength λ has stopping potential V₀. When illuminated by wavelength 2λ, the stopping potential becomes V₀/4. The threshold wavelength is:

Physics · Photoelectric effect and dual nature of matter · question based on photoelectric effect

JEE Mains11 April 2023Shift 1Morning Shift

A metal surface illuminated by wavelength λ has stopping potential V₀. When illuminated by wavelength 2λ, the stopping potential becomes V₀/4. The threshold wavelength is:

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