Questions

A sample of hydrogen is bombarded by electrons. Through what potential difference should the electrons be accelerated so that third line of Lyman series be emitted?

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2.55 V

10.2 V

12.09 V

12.75 V

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detailed solution

Correct option is D

13.6 - 0.85 = 12.75 eVSo, 12.75 V is the required potential difference.

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