Physics · 2020
JEE Main · 9 January 2020, Shift 2 · Q19
The energy required to ionise a hydrogen like ion in its ground state is 9 Rydbergs. What is the wavelength of the radiation emitted when the…
The energy required to ionise a hydrogen like ion in its ground state is $\displaystyle 9$ Rydbergs. What is the wavelength of the radiation emitted when the electron in this ion jumps from the second excited state to the ground state ?
Official answer
(1)
11.$\displaystyle 4$ nm
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.