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Taking Rydberg’s constant RH=1.097×107 m first and second wavelength of Balmer series in hydrogen spectrum is

(a) 2000 Å, 3000 Å                  (b) 1575 Å, 2960 Å
(c) 6529 Å, 4280 Å                  (d) 6552 Å, 4863 Å

(d) 1λ=R1n12-1n22 For first wavelength, n1=2, n2=3 λ1 =6563 Å. For second wavelength,  n1=2, n2=4λ2=4861Å

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