Atoms And Nuclei Question 279

Question: In the hydrogen atom, an electron makes a transition from n = 2 to n = 1. The magnetic field produced by the circulating electron at the nucleus -

Options:

A) decreases 16 times

B) increases 4 times

C) decreases 4 times

D) increases 32 times

Show Answer

Answer:

Correct Answer: D

Solution:

  • $ \because B=\frac{{\mu_{0}}I}{2r}\text{ and},I=\frac{e}{T} $ $ B=\frac{{\mu_{0}}e}{2rT}[ r\propto n^{2},T\propto n^{5} ]; $ $ B\propto \frac{1}{n^{5}} $


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