The hydrogen spectrum consists of several spectral lines in the Lyman series (; has the lowest energy among the Lyman series). Similarly, it consists of several spectral lines in the Balmer series (; has the lowest energy among the Balmer lines). The en

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Solution

Q.
The hydrogen spectrum consists of several spectral lines in the Lyman series ( $L_{1}, L_{2}, L_{3}, \dots$ ; $L_{1}$ has the lowest energy among the Lyman series). Similarly, it consists of several spectral lines in the Balmer series ( $B_{1}, B_{2}, B_{3}, \dots$ ; $B_{1}$ has the lowest energy among the Balmer lines). The energy of $L_{1}$ is $x$ times the energy of $B_{1}$ . The value of $x$ is _______ $\times 10^{- 1}$ . (Nearest integer) [2026]

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