Hey aspirant,
According to Kepler's Law of Planetary motion, T^2 is directly proportional to R^3, where T is time period and R radius.
Therefore the ration of the time period is given as :- (T1/T2)^2 =(1/4)^3 = 1/64
So, T1/T2 = 1/8.
Hope this helps,
All the best!
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