In a hydrogen atom, the electron is in nth excited state. It may come down to second excited sta...

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In a hydrogen atom, the electron is in nth excited state. It may come down to second excited state by emitting ten different wavelengths. What is the value of \( n \) :
(A) 6
(B) 7
(C) 8
(D) 5
\( \mathrm{P} \)
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