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Question

In a photocell, frequency of incident radiation is increased by keeping other factors constant (v>v0) the stopping potential

A
decreases
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B
increases
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C
becomes zero
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D
first decreases then increases
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Solution

The correct option is A decreases
eVo=hνϕ

where Vo=stopping potential , ν=frequency and ϕ=work function

Vo increases with increase in ν

Hence, answer is option-(A).

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