Variation of stopping potential 
with frequency v of incident radiation for photosensitive materials A and B are as shown below
Which of the following statement(s) is/are correct?
(I) Stopping potential varies linearly with frequency of incident radiation.
(II) There exists a maximum frequency, above which only the photoemission could takes place.
Text Solution
Verified by ExpertsA
The statement I is correct but rest is incorrect and it can be corrected as,
We know that, there exists a certain minimum cut-off frequency 
for which the stopping potential is zero. This means, for a frequency v of incident radiation lower than the cut-off frequency 
, no photoelectric emission is possible even, if the intensity is large.
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