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I vs V - Varying Frequency

The maximum k...

Question

The maximum kinetic energy ( $E_{k}$ ) of emitted photoelectrons against frequency $ν$ of incident radiation is plotted as shown in fig. The slope of the graph is equal to

A

Charge on electron

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B

Work function of emitter

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C

Plancks constant

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D

Ratio of Plancks constant and charge on electron

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Solution

The correct option is C Plancks constant
Answer is C.
$E_{k} = h ν - ϕ$
So, comparing it with
$y = m x + c$
we get slope $= h$

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