Physics · 2020
JEE Main · 9 January 2020, Shift 2 · Q7
Planet A has mass M and radius R. Planet B has half the mass and half the radius of Planet A. If the escape velocities from the Planets A and B are…
Planet A has mass M and radius R . Planet B has half the mass and half the radius of Planet A. If the escape velocities from the Planets A and B are $\displaystyle v_{\mathrm{A}}$ and $\displaystyle v_{\mathrm{B}}$, respectively, then $\displaystyle \frac{v_{\mathrm{A}}}{v_{\mathrm{B}}}=\frac{\mathrm{n}}{4}$. The value of n is :
Official answer
(4)
$\displaystyle 4$
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