The shortest \( \lambda \) for the Lyman series of hydrogen atom is ... (Given \( \mathrm{R}_{\m...

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The shortest \( \lambda \) for the Lyman series of hydrogen atom is ...
(Given \( \mathrm{R}_{\mathrm{H}}=109678 \mathrm{~cm}^{-1} \) )
(a) \( 911.7 \AA \)
(b) \( 700 \AA \)
(c) \( 600 \AA \)
(d) \( 811 \AA \)
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