KCET · Physics · Dual Nature of Matter
The variation of photo-current with collector potential for different frequencies of incident
radiation \( v_{1}, v_{2} \) and \( v_{3} \) is as shown in the graph, then
- A \( v_{1}=v_{2}=v_{3} \)
- B \( v_{1}>v_{2}>v_{3} \)
- C \( v_{1} < v_{2} < v_{3} \)
- D \( v_{3}=\frac{v_{1}+v_{2}}{2} \)
Answer & Solution
Correct Answer
(C) \( v_{1} < v_{2} < v_{3} \)
Step-by-step Solution
Detailed explanation
The stopping potential is directly proportional to the frequency of incident radiation and photoelectric current is
independent of the frequency of incident radiation. Therefore, \( f_{1} < f_{2} < f_{3} \)
independent of the frequency of incident radiation. Therefore, \( f_{1} < f_{2} < f_{3} \)
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