Modern Physics 1 Question 17
14. The wavelength of the first spectral line in the Balmer series of hydrogen atom is . The wavelength of the second spectral line in the Balmer series of singly ionized helium atom is
(2011)
(a)
(b)
(c)
(d)
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Solution:
For hydrogen or hydrogen type atoms,
In the transition from
Substituting the values, we have