1.

In terms of Rydberg constant R, the wave number of the first Balmer line is

Answer»

R
3R
`(5R)/(36)`
`(8R)/(9)`

Solution :For the first BALMER LINE `overline upsilon = (1)/(lambda) = R ((1)/(2^(2)) - (1)/(3^(2))) = (5R)/(36)`


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