A) The stopping potential will be 0.2 V
B) The stopping potential will be 0.6 V
C) The saturation current will be 6 mA
D) The saturation current will be 18 mA
Correct Answer: B
Solution :
Cut off voltage is independent of intensity and hence remains the same. Since distance becomes 3 times, so intensity (I) becomes \[\frac{I}{9}.\] Hence photo current also decreases by this factor i.e. becomes \[\frac{18}{9}=2\,mA.\]You need to login to perform this action.
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