The first line in the Lyman series has wavelength $\lambda $ . The wavlength of the first line in Balmer series is

  • A

    $\frac{2}{9}\,\lambda $

  • B

    $\frac{9}{2}\,\lambda $

  • C

    $\frac{5}{27}\,\lambda $

  • D

    $\frac{27}{5}\,\lambda $

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