1.

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 hn > W2) [CBSE PMT 1992]

A.            \[{{I}_{1}}={{I}_{2}}\]       
B.            \[{{I}_{1}}<{{I}_{2}}\]
C.            \[{{I}_{1}}>{{I}_{2}}\]       
D.            \[{{I}_{1}}<{{I}_{2}}<2{{I}_{1}}\]
Answer» B.            \[{{I}_{1}}<{{I}_{2}}\]


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