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Question: Answered & Verified by Expert
The stopping potential as a function of frequency of incident radiation is plotted for two different photoelectric surfaces A and B . The graphs show that the work function of A is

PhysicsDual Nature of MatterNEET
Options:
  • A greater than that of B
  • B smaller than that of B
  • C same as that of B
  • D such that no comparison can be done from given graphs
Solution:
1387 Upvotes Verified Answer
The correct answer is: smaller than that of B
We know that E=w+kE

hv=hv0+eV0

v0=hve-hv0e

From graph, we can see that v0 is less for A and greater for B .

Hence work function of A is less than B .

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