The number of spectral lines emitted by atomic hydrogen that is in the ${4}^{\text{th }}$ energy level, is

[JEE Main 2025, 29 Jan (Shift 2)]

Question

The number of spectral lines emitted by atomic hydrogen that is in the ${4}^{\text{th }}$ energy level, is [JEE Main 2025, 29 Jan (Shift 2)]

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The number of spectral lines emitted by atomic hydrogen that is in the \({4}^{\text{th }}\) energy level, is [JEE Main 2…