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Physics · 2020
JEE Main · 7 January 2020, Shift 1 · Q18
The time period of revolution of electron in its ground state orbit in a hydrogen atom is 1.6 × 10^-16 s. The frequency of revolution of the electron…
The time period of revolution of electron in its ground state orbit in a hydrogen atom is $\displaystyle 1.6 \times 10^{-16} \mathrm{~s}$. The frequency of revolution of the electron in its first excited state (in $\displaystyle \mathrm{s}^{-1}$ ) is :
Official answer
(2)
$\displaystyle 7.8 \times 10^{14}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.