Two planets have the same average density, but their radii are R 1 and R 2 . If…
Physics · JEE Advanced · NTA Exams — Gravitation
Two planets have the same average density, but their radii are R1 and R2. If acceleration due to gravity at surface on these planets are g1 and g2 respectively, then
- \(\frac{g_{1}}{g_{2}}=\frac{R_{1}}{R_{2}}\)
- \(\frac{g_{1}}{g_{2}}=\frac{R_{2}}{R_{1}}\)
- \(\frac{g_{1}}{g_{2}}=\frac{R_{1}^{2}}{R_{2}^{2}}\)
- \(\frac{g_{1}}{g_{2}}=\frac{R_{1}^{3}}{R_{2}^{3}}\)
Answer
(A) g_ 1 g_ 2 = R_ 1 R_ 2
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