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JEE Main 2021 (17 Mar, Shift 1) · Bohr Model: Orbits, Speed & Angular Momentum

Bohr Model: Orbits, Speed & Angular Momentum question from JEE Main 2021 (17 Mar, Shift 1)

Q85JEE Main 2021 · 17 MAR · SHIFT 1Easy

Bohr Model: Orbits, Speed & Angular Momentum

If an electron is moving in the nth orbit of the hydrogen atom, then its velocity (vn) for the nth orbit is given as:

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Answer: (a)

$v_n = \frac{e^2}{2\varepsilon_0 nh}$ , so speed falls as $n$ rises.
So the answer is (a) $v_n \propto \frac{1}{n}$ .

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