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Q.

A cathode of a photo electric cell is changed such that the work function changes from W1   to   W2 (W1 < W2) if the current before and after changes are I1 and I2 all other conditions remaining unchanged, then (assuming h > W2 )

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a

I1=I2

b

I1

c

I1>I2

d

I1

answer is A.

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Detailed Solution

Photo current doesnot depent on work function but depends on Intensity.  I1=I2
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