The figure shows stopping potential V0 and frequency υ for two different metallic surfaces A and B. The work function of A, as compared to that of B is:
more
less
nothing can be said
equal
A
less
B
equal
C
nothing can be said
D
more
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Solution
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The correct option is A less
eV=hυ−ϕ
From above equation,
The value of threshold frequency ν0 for A is less than that for B , hence ϕA < ϕB.
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