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MHT CET 2026 (11 Apr, Shift 2) · Bohr Model: Orbits, Speed & Angular Momentum

Bohr Model: Orbits, Speed & Angular Momentum question from MHT CET 2026 (11 Apr, Shift 2)

Q5MHT CET 2026 · 11 APR · SHIFT 2Easy

Bohr Model: Orbits, Speed & Angular Momentum

In Bohr's theory of hydrogen atom, 'r' is the radius of the orbit, 'V' is the speed of electron and E is the total energy of the electron. Out of the following which physical quantity is inversely proportional to principal quantum number?

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Answer: (a)

$mVr = \frac{nh}{2\pi}$ , so $Vr \propto n$ .
Hence $\frac{1}{Vr} \propto \frac{1}{n}$ .
So the answer is (a) $\frac{1}{Vr}$ .

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