Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:
The cathode of a photoelectric cell is changed such that the work function changes from W1 to W2 (W1>W2). If the current before and after are i1 and i2 respectively and all other conditions remain unchanged, then which of the following is true?
Options:
i1=i2
i1
i1>i2
W1/W2=i1/i2
Correct Answer:
i1=i2
Explanation:
Since the intensity of the light does not change, the photocurrent before and after remains constant.