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Using Bohr's postulates obtain the e...

Using Bohr's postulates obtain the expression for Bohr radius .

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Considered an electron revolving around the nucleus of hydrogen atom.The electrostatic force of attraction,between the revolving electron and the nucleus provides the required centripetal force to keep the elctron in its orbits.
i.e., `(mv^(2))/(r )=(1)/(4piepsi_(0))(e^(2))/(r^(2))`
`implies mv^(2)r=(e^(2))/(4piepsi_(0))`
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