The photoelectric equation is

h v = h v_{0} - E_{k}

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k v = h v_{0} + \frac{E_{k}}{V}

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h v = h v_{0} + E_{k}

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h v = h v_{0}

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Solution

The correct option is B $h v = h v_{0} + E_{k}$
The photoelectric effect related with the
incident light frequency $(ν)$ by the following equation:
$E_{k} = e V_{s} = h ν - ϕ$ ,
where $ϕ = h ν_{0}$ is the work function of the material and $E_{k}$ is the kinetic energy of the photo electron.
So, $E_{k} = h ν - h ν_{0}$
or, $h ν = h ν_{0} + E_{k}$
So, the answer is option (C).

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