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Q.

In a photoelectric experiment, the graph of frequency ν of incident light (in Hz) and stopping potential V (in volt) is shown below. From the figure, the value of the Planck's constant is (e is the elementary charge)

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a

eabcb

b

ecbab

c

eacbc

d

eacab

answer is A.

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Detailed Solution

Slope of V and υ graph =he
Tanθ=abbc=heh=eabbc

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