As per given figure | MODERN PHYSICS JEE Main 2023

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JEE MAIN 2023

15-04-2023 S1

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As per given figure $A, B$ and $C$ are the first, second and third excited energy level of hydrogen atom respectively. If the ratio of the two wavelengths $\left(\mathrm{i}, \mathrm{e} . \frac{\lambda_1}{\lambda_2}\right)$ is $\frac{7}{4 \mathrm{n}}$, then the value of n will be

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