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Many planets are revolving around the fixed sun in circular orbits of different radius `(R)` and difference time period `(T)` To estimate the mass of the sun the orbital radius `(R)` and time period `(T)` of planets were noted. Then `"log"_(10)` T v/s `"log"_(10)R` curve was plotted. The curve was found to be approximately straight line (as shown in) having y intercept `=6.0` (Neglect the gravitational interaction among the planets) [Take `G = (20)/(3) xx 10^(-11)` in MKS, `pi^(2)= 10`] Two plantes `A` and `B` having orbital radius `R` and `4R` are initally at the closest position and rotating in the same direction if angular velocity of planet `B` is `omega_(0)` then after how much time will both the planets be again in the closest postion? (Neglect the interaction between planets) .A. `(2pi)/(7omega_(0))`B. `(2pi)/(9omega_(0))`C. `(2pi)/(omega_(0))`D. `(2pi)/(5omega_(0))` |
Answer» Correct Answer - A | |