Calculate the wave length in angstroms of the photon that is emitted when an electron in the Bohr's orbit `n=2` return

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Q 1116291179.     Calculate the wave length in angstroms of the photon that is emitted when an electron in the Bohr's orbit `n=2` returns to the orbit, `n=1` in the hydrogen atom. The ionization potential of the ground state hydrogen atom is `2.17xx10^-11 ` erg per atom.
JEE 1982
A

`1296`

B

`1153`

C

`1221`

D

`1024`

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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