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From the graph shown, the value of Work function if the stopping potential, V, and frequency of the incident light 'v' are on y and x- axes respectively is
- 1eV
- 2eV
- 4eV
- 3eV
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hv=hv0+K.E
at stopping potential K.E=eV
⇒hv=hv0+eV
V=he(v−v0)
∴ from the graph for v=0
⇒ work function ϕ=hv0=3eV.
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