QJEEM22Ph7aa4: JEE Main 2022 Physics - Class 12 JEEM22Ph7aa4 Solution: The ratio for the speed of the electron in the 3 rd orbit of He …

Question

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The ratio for the speed of the electron in the 3^rd orbit of He⁺ to the speed of the electron in the 3^rd orbit of hydrogen atom will be :

Accepted Answer

We know that $v \propto {Z \over n}$

$\Rightarrow$ Required ratio $= {{{2 \over 3}} \over {{1 \over 3}}}$

$= 2:1$

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