the stopping potential for the photo current is −V0/2. When the surface is illuminated by monochromatic light of frequency v/2

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When a certain photosensitive surface is illuminated with monochromatic light of frequency v, the stopping potential for the photo current is −V0/2. When the surface is illuminated by monochromatic light of frequency v/2, the stopping potential is −V0. The threshold frequency for photoelectric emission is :
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When a certain photosensitive surface is illuminated with monochromatic light of frequency v, the stopping potential for the photo current is −V0/2. When the surface is illuminated by monochromatic light of frequency v/2, the stopping potential is −V0. The threshold frequency for photoelectric emission is : the stopping potential for the photo current is −V0/2. [...]
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