The velocity of an electron in a certain Bohr.s orbit of H-atom bears the ratio 1:275 to the velocity of light. Then find the quantum number (n) of orbit ?

The velocity of an electron in a certain Bohr.s orbit of H-atom bears

1.	The velocity of an electron in a certain Bohr.s orbit of H-atom bears the ratio 1:275 to the velocity of light. Then find the quantum number (n) of orbit ?
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