# Ratio of energy of photon when electron in hydrogen atom comes from 3rd excited state to 2nd excited state and energy

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Ratio of energy of photon when electron in hydrogen atom comes from 3rd excited state to 2nd excited state and energy of photon having maximum possible energy when electron in H atom comes in ground state will be $\frac x{x + 4}$ then find value of x.

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In first case E1