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Karnataka Board PUCPUC Science 2nd PUC Class 12

The gyro-magnetic ratio of an electron in an H-atom, according to Bohr model, is ______. independent of which orbit it is in. negative. positive. increases with the quantum number n.

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Question

The gyro-magnetic ratio of an electron in an H-atom, according to Bohr model, is ______.

  1. independent of which orbit it is in.
  2. negative.
  3. positive.
  4. increases with the quantum number n.

Options

  • a and b

  • a and c

  • b and c

  • c and d

MCQ
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Solution

a and b

Explanation:

Angular momentum of electron (L) = nh/2π

Magnetic moment of electron M = neh/4πm

Gyromagnetic ratio = magnetic moment/angular momentum

2πneh/4πnhm

= e/2m

= constant

It is independent of the orbit in which the electron is revolving.

Since e is negative, the geomagnetic ratio is negative.

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Chapter 4: Moving Charges And Magnetism - MCQ I [Page 23]

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NCERT Exemplar Physics Exemplar [English] Class 12
Chapter 4 Moving Charges And Magnetism
MCQ I | Q 4.07 | Page 23
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