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In the Bohr model of a hydrogen atom, th...

In the Bohr model of a hydrogen atom, the centripetal force is furnished by the coulomb attraction between the proton and the electron. If `a_(0)` is the radius of the ground state orbit, m is the mass and e is the chargeon the electron and `varepsilon_(0)` is the vacuum permittivity,the speed of the electron is

A

`e/ (sqrt(4piepsilon_(0) a_(0)m))`

B

`e/ (sqrt(epsilon_(0) a_(0)m))`

C

Zero

D

`sqrt(4pi epsilon_(0) a_(0)m)/e`

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The correct Answer is:
A
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