A certain metallic surface is illuminated with monochromatic light of wavelength

A certain metallic surface is illuminated with monochromatic light of wavelength λ. The stopping potential for photoelectric current for this light is 3V₀. If the same surface is illuminated with light of wavelength 2λ, the stopping potential is V₀. The threshold wavelength for this surface for photoelectric effect is

Options

(a) 6λ
(b) 4λ
(c) λ/4
(d) λ/6

Correct Answer:

Explanation:

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