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

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The radius of orbit of a planet is two times that of the earth. The time period of planet is [BHU 2003; CPMT 2004; RPMT 2006; Similar UPSEAT 2003; DCE 2004; RPMT 2005]
(a) \( 4.2 \) years
(b) \( 2.8 \) years
(c) \( 5.6 \) years
(d) \( 8.4 \) years
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