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Hydrogen atoms in the ground state are ...

Hydrogen atoms in the ground state are excited by means of radiation of wavelength 1026 Å. Find out the wavelength of radiation that this excited atoms can emit when they come back to ground state. Given,
`h=6.625xx10^(-34)J*s,c=3xx10^(8)m*s^(-1), 1 eV =1.6xx10^(-19)J` ionisation energy of hydrogen = 13.62 eV.

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The correct Answer is:
1026 Å,1216 Å,6567Å
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