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AIIMS 2017 Physics Question Paper for free online practice with solutions

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Question : 1 of 60

Marks: +1, -0

The potential difference that must be applied to stop the fastest photo electrons emitted by a nickel surface, having work function 5.01 eV,when ultraviolet light of 200 nm falls on it, must be

2.4 V
– 1.2 V
– 2.4 V
1.2 V

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