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In Bohr.s model of hydrogen atom, the ra...

In Bohr.s model of hydrogen atom, the ratio between the period of revolution of an electron in orbit n=1 to the period of the electron in the orbit n=2 is

A

`1:2`

B

`2:1`

C

`1:4`

D

`1:8`

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The correct Answer is:
D
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