The radius of orbit of a planet is two t...

The radius of orbit of a planet is two times that of Earth. The time period of planet is` ...........`years.

4.2

2.8

5.6

8.4

Text Solution

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The correct Answer is:

`T_(2) =T_(1)((a_(2))/(a_(1)))^(3/2) rArrT_(2) = 1xx(2)^(3/2) = 2.8 `

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