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Standard XII
Physics
I vs V - Varying Frequency
Question

The maximum kinetic energy (Ek) of emitted photoelectrons against frequency ν of incident radiation is plotted as shown in fig. The slope of the graph is equal to
20745.png
  1. Charge on electron
  2. Work function of emitter
  3. Plancks constant
  4. Ratio of Plancks constant and charge on electron

A
Charge on electron
B
Work function of emitter
C
Ratio of Plancks constant and charge on electron
D
Plancks constant
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Solution
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Answer is C.
Ek=hν−ϕ
So, comparing it with
y=mx+c
we get slope =h

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