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

The radius of orbit of a planet is two times that of the earth. The time period of planet is

A

4.2 years

B

2.8 years

C

5.6 years

D

8.4 years

Text Solution

Verified by Experts

The correct Answer is:
B
`(T_1)/(T_2)=(r/(2r))^(3/2)rArrT_2=(2)^(3/2)T_1=2.8` year.
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