Q25. When a metallic surface is illuminated with monochromatic light of wavelength λ, the stopping potential for photoelectric current is 3V0. When the same metallic surface is illuminated with a light of wavelength 2λ, the stopping potential is V0. The threshold wavelength for the surface is:Physics — Dawn of Modern Physics — Question 25 of 217A. 6λB. 4λC. 4λ /3D. 8λPractice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →