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Questions  

Pick the wrong statement of the following

a
Photoelectric current increases with increase in accelerating potential untill it becomes maximum value
b
High voltage spark passed across electrodes in a discharge tube if they are illuminated by ultraviolet light
c
To study the effect of potential on photoelectric current, we first maintain collector at some positive  potential with respect to emitter
d
The maximum negative potential given to collector for which photoelectric current becomes zero is  called stopping potential

detailed solution

Correct option is B

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