Question

if the orbital radius of planet doubled then it's time period becomes

Answer 1

by kepler's third law
(orbital radius)^3 is directly proportional to (time period^2)
so if orbital radius of planet is doubled then it's time period becomes ​2√2 of the previous time period.

Answer 2

Answer:

so if orbital radius of planet is doubled then it's time period becomes 2√2 of the previous time period.

Explanation:

2√2 of the previous time period.