NEET UG PHYSICS MCQ: NUCLEI

1 Easy

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Understanding +4 | -1

The momentum of an electron revolving in

n^{\text {th }}

orbit is given by: (Symbols have their usual meanings)

View answer and explanation

Correct option: A

\frac{n h}{2 \pi r}

Option A is correct because the angular momentum of an electron in the nth orbit is quantized and given by

L = n\frac{h}{2\pi} = mvr

, so

p = mv = \frac{nh}{2\pi r}

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