An electron of energy 2.6eV strikes an e...

An electron of energy 2.6eV strikes an excited H-atom and gets absorbed. After that H-atom comes to ground state and a photon is released. Find the frequency of photon released.

`2.18 x 10^15 Hz`

`4.12 x 10^15 Hz`

`3.08 x 10^15 Hz`

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