If an electron in a hydrogen atom undergoes a transition from the $4^{th}$ stationary orbit and emits a line in the Lyman series,calculate the wavelength of the emitted radiation.

  • A
    $9.7 \times 10^{-8} \ m$
  • B
    $9.7 \times 10^{-8} \ m^{-1}$
  • C
    $2.92 \times 10^{15} \ s$
  • D
    $2.6 \times 10^{-9} \ m$

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