The graph shows variation of stopping potential V

CBSE Class 12 Physics 2014 Outside Delhi Set 3 Paper

Question : 2 of 9

Marks: +1, -0

The graph shows variation of stopping potential V0 versus frequency of incident radiation v for two photosensitive metals A and B. Which of the two metals has higher threshold frequency and why?

Solution:

Metal A has higher threshold frequency because from the graph it is clear that the minimum frequency required to start photo emission is more in A than that of B.

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