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Class 12 • Physics • Chapter-12
Atoms & Nuclei
Question 637 of 664
637
Medium
An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r. The Coulomb force $
\overrightarrow F
$ between the two is
Choose the correct answer:
A
K{{{e^2}} \over {{r^2}}}\widehat r
B
- K{{{e^2}} \over {{r^3}}}\widehat r
C
K{{{e^2}} \over {{r^3}}}\widehat r
D
- K{{{e^2}} \over {{r^2}}}\widehat r
Select an answer first
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