The ratio of frequency of revolutions made by electron in 2nd excited state he+ and 2nd state of hydrogen is
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Explanation:
f1/f2 = z13/n12 x n22/z23 [Ratio of frequencies of electron in the second state of He+ to the second state of Hydrogen]
Substituting the values n1= 3, z1 = 2, z2=1 , n2 = 2 we get
f1/f2 = 32/27
Hence option A is the correct answer.
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