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If a= (h)/(4 pi^(2)me^(2)) then correct ...

If `a= (h)/(4 pi^(2)me^(2))` then correct expression for calculate of the first orbit of hydrogen atom is

A

`sqrt4pihalpha`

B

`sqrt2pihalpha`

C

`sqrt(4h^(2))pialpha`

D

Both A and C

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The correct Answer is:
D
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