The cathode of a photoelectric cell is changed such that the work function changes from W…
Physics · JEE Advanced · NTA Exams — Atoms and Nuclei
The cathode of a photoelectric cell is changed such that the work function changes from W1 to W2 (W2>W1). If the current before and after change are I1 and I2, all other conditions remaining unchanged, then
(assuming hν > W2)
(assuming hν > W2)
- I1= I2
- I1 < I2
- I1 > I2
- I1 < I2 < 2I1
Answer
(A) I 1 = I 2
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