The energy levels of the hydrogen spectrumis shown in figure.some transitions A, B, C, D and E. Transition A, B and C respectively represent [CPMT 1986, 88]

Transition A (n = ¥ to 1) : Series limit of Lyman series

Transition B (n = 5 to n = 2) :Third spectral line of Balmer series

Transition C (n = 5 to n = 3) : Second spectral line o

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