In two H atoms A and B the electrons mov...

In two H atoms A and B the electrons move around the nucleus in circular orbits of radius r and 4r respectively. The ratio of the times taken by them to complete one revolution is

`1:4`

`4:1`

`1:8`

`8:1`

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The correct Answer is:

According to Kepler's law `t^(2) prop R^(3)`

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