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MHT CET 2026 (15 Apr, Shift 1) · Bohr Model: Orbits, Speed & Angular Momentum

Bohr Model: Orbits, Speed & Angular Momentum question from MHT CET 2026 (15 Apr, Shift 1)

Q9MHT CET 2026 · 15 APR · SHIFT 1Easy

Bohr Model: Orbits, Speed & Angular Momentum

When the electron orbiting in hydrogen atom in its ground state moves to the third excited state, the de-Broglie wavelength associated with it

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Answer: (b)

$\lambda = \frac{h}{mv}$ and $v \propto \frac{1}{n}$ , so $\lambda \propto n$ .
Ground state $n = 1$ to third excited state $n = 4$ : $\lambda$ becomes $4$ times.
So the answer is (b) will increase.

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