The wavelength of spectral line in the Lyman series \( \mathrm{P} \...

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The wavelength of spectral line in the Lyman series
\( \mathrm{P} \) of a \( \mathrm{H} \)-atom is \( 1028 \AA \). If instead of hydrogen, we consider deuterium then shift in the wavelength of
W this line will be \( \left(m_{p}=1860 m_{e}\right) \)
(a) \( 1027.7 \AA \)
(b) \( 1036 \AA \)
(c) \( 1028 \AA \)
(d) \( 1021 \AA \)
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