Photoelectric EffectMedium
Question
When a certain metallic surface is illuminated with mono-chromatic light of wave length l, the stopping potential for photo electric current is 6 V0. When the same surface is illuminated with light of wave length 2λ, the stopping potential is 2V0. The threshold wavelength of this surface for photoelectric effect is :
Options
A.6 λ
B.4 λ / 3
C.4 λ
D.8 λ
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