CBSE Class 12 Physics 2014 Outside Delhi Set 3 Paper
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Question : 2 of 9
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The graph shows variation of stopping potential versus frequency of incident radiation 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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