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Question : 13
Total: 26
Sketch the graphs showing variation of stopping potential with frequency of incident radiations for two photosensitive materials A B v A > v B
(i) In which case is the stopping potential more and why?
(ii) Does the slope of the graph depend on the nature of the material used? Explain.
(i) In which case is the stopping potential more and why?
(ii) Does the slope of the graph depend on the nature of the material used? Explain.
Solution:
Sketch of the Graph
(i) Stopping potential and Reason
(ii) Dependence of slope and Explanation
(i) For material B
From the graph for the same value of 'v B [ V 0 =
( v − v 0 ) ]
∴ V 0 v 0 ]
(ii) No
As slope is given by
(i) Stopping potential and Reason
(ii) Dependence of slope and Explanation
(i) For material B
From the graph for the same value of '
(ii) No
As slope is given by
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