Gravitation Question 202

Question: The radius of orbit of a planet is two times that of the earth. The time period of planet is [BHU 2003; CPMT 2004]

Options:

A) 4.2 years

B) 2.8 years

C) 5.6 years

D) 8.4 years

Show Answer

Answer:

Correct Answer: B

Solution:

$ [T_{2}=T_{1}{{\left( \frac{R_{2}}{R_{1}} \right)}^{3/2}}=1\times {{(2)}^{3/2}}=2.8,,year] $



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