In the hydrogen spectrum,the wavelengths of light emitted in a series of spectral lines is given by the equation,$\frac{1}{\lambda}=R\left(\frac{1}{4^{2}}-\frac{1}{n^{2}}\right)$,where $n=5, 6, 7, \ldots$ and $R$ is Rydberg's constant. Identify the series and wavelength region.

  • A
    Pfund,near infrared
  • B
    Brackett,infrared
  • C
    Pfund,far infrared
  • D
    Brackett,near infrared

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