When a certain photosensitive surface is illuminated with a monochromatic light of frequency ν , the stopping potential of the photo current is - V 0 2 . When the surface is illuminated by monochromat

Question

When a certain photosensitive surface is illuminated with a monochromatic light of frequency ν , the stopping potential of the photo current is - V 0 2 . When the surface is illuminated by monochromatic light of frequency ν 2 , the stopping potential is - V 0 . The threshold frequency for photoelectric emission is

TestHub · Accepted Answer

h ν​ = W + V 0 2 e h ν​ 2 = W + V 0 e On solving, we get, W = 3 2 h ν​ ⇒ h ν​ 0 = 3 2 h ν​ ⇒ ν​ 0 = 3 2 ν​

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