The frequency of first line of Balm...
Question
The frequency of first line of Balmer series in hydrogen atom is vo. The frequency of corresponding line emitted by singly ionised helium atoms is
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The frequency of first line of Baimer series in hydrogen atom is vo. The frequency of corresponding line emitted by singly ionised helium atoms is :-
(1) ( 2 v_{0} )
(2) ( 4 v_{0} )
(3) ( v_{0} / 2 )
(4) ( v_{0} / 4 )

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The frequency of first line of Balmer series in hydrogen atom is vo. The frequency of corresponding line emitted by singly ionised helium atoms is
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frequency ( alpha n^{2} )
hydrogen [begin{array}{l}text  f=v_{0}
therefore text { for helium } f=4 v_{0}
text { (2) option }
end{array}
]

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