InterviewSolution
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InterviewSolution
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Two planets revolve round the sun with frequencies `N_(1)` and `N_(2)` revolutions per year. If their average orbital radii be `R_(1)` and `R_(2)` respectively, then `R_(1)//R_(2)` is equal toA. `(N_(1)//N_(2))^(3//2)`B. `(N_(2)//N_(1))^(3//2)`C. `(N_(1)//N_(2))^(2//3)`D. `(N_(2)//N_(1))^(2//3)` |
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Answer» Correct Answer - d `Tprop R^(3//2)" as "T_(1)=(1)/(N_(1))` `therefore" "(1)/(N_(1)) prop R_(1)^(3//2)" and ""(1)/(N_(2)) prop R_(2)^(3//2)` `(N_(2))/(N_(1))=((R_(1))/(R_(2)))^(3//2) or (R_(1))/(R_(2))=((N_(2))/(N_(1)))^(2//3)` |
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