Questions  

The maximum energy Kmax of photoelectrons emitted in a photoelectric cells is measured using lights of various frequencies v. The graph in shows how Kmaxvaries with v. The slope of the graph is equal to
 

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By Expert Faculty of Sri Chaitanya
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a
the charge of an electron
b
the charge of mass ratio of an electron
c
the work function of the emitter in the cell
d
Planck’s constant.
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detailed solution

Correct option is D

Since Kmax=hv−v0, the slope of the graph of Kmax against v is h, the Planck's constant.

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Similar Questions

Photoelectric experiment is conducted separately in the same experimental set up using light of same intensity but of different frequencies f1 and f2 f1>f2. If i be the photo current and V be the applied potential, then which of the following graphs correctly shows the variation of i with V?

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