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Q.

The stopping potential as a function of frequency of incident radiation is plotted for two different photoelectric surfaces A and B. The graph shows that the work function of A is

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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 graph

answer is B.

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Detailed Solution

The i!intersect of the graph with v-axis gives the threshold frequency v0 .As v0 is s less for A and hencethe work-function  W0=hv0 is less for A
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