hν=W+2V0e
2hν=W+V0e
On solving, we get, W=23hν
⇒hν0=23hν
⇒ν0=23ν
When a certain photosensitive surface is illuminated with a monochromatic light of frequency ν, the stopping potential of the photo current is −2V0. When the surface is illuminated by monochromatic light of frequency 2ν, the stopping potential is −V0. The threshold frequency for photoelectric emission is
Held on 12 Jan 2019 · Verified 6 Jul 2026.
35v
23v
34v
2v
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