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Q.

The cathode of photoeletric cell is changed such that the work function charges from W1 to W2 (W2 > W1). If the current are I1 and I2 all other conditions remaining unchanged, then (assuming hv > W2)

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a

I1=I2

b

I1

c

I1>I2

d

I1

answer is A.

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Detailed Solution

The work function has no effect on current so long as hv>W0.  The photoelectric current is proportional to the intensity of light. since there is no change in the intensity of light, therefore I1 = I2.
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The cathode of photoeletric cell is changed such that the work function charges from W1 to W2 (W2 > W1). If the current are I1 and I2 all other conditions remaining unchanged, then (assuming hv > W2)