Question

In a photocell, frequency of incident radiation is increased by keeping other factors constant $(v>v_0)$ the stopping potential

• A. decreases
• B. increases
• C. becomes zero
• D. first decreases then increases

Answer 1

The correct option is A decreases

$e{V}_o=h\nu -\varphi$

where $V_o$=stopping potential , $\nu$=frequency and $\varphi$=work function

$⟹V_o$ increases with increase in $\nu$

Hence, answer is option-(A).