Question

The variation of photocurrent with collector potential for different frequencies of incident radiation $\nu_{1},\nu_{2},\nu_{3}$ is as shown in the graph, then

• A. $\nu_{1}=\nu_{2}=\nu_{3}$
• B. $\nu_{1}>\nu_{2}>\nu_{3}$
• C. $\nu_{1} < \nu_{2} < \nu_{3}$
• D. $\nu_{3}=\frac{\nu_{1} + \nu_{2}}{2}$

Answer 1

Answer: (C)

The smaller the incident frequency, the smaller the stopping voltage required.

$\nu_{3}>\nu_{2}>\nu_{1}$