Gravitation Question 205

Question:If a new planet is discovered rotating around Sun with the orbital radius double that of earth, then what will be its time period (in earth’s days)[DCE 2004]

Options:

A) 1032

B) 1023

C) 1024

D)1043

Show Answer

Answer:

Correct Answer: A

Solution:

[T2R3]

Þ [(TPTE)2=(RPRE)3=(2RERE)3]

Þ [TPTE=(2)3/2=22] Þ [TP=22×365=1032.37] = 1032 days



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