Physics · 2021
JEE Main · 25 February 2021, Shift 2 · Q16
The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from n =2 to n =1 state is:
The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from $\displaystyle \mathrm{n}=2$ to $\displaystyle \mathrm{n}=1$ state is :
Official answer
(1)
121.$\displaystyle 8$ nm
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.