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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Units and Measurement
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Three planets of same density and with radii $R_1,R_2$ and $R_3$ Such that $R_1=2R_2=3R_3$, have gravitational fields on the surfaces $E_1,E_2,E_3$ and escape velocities $v_1,v_2,v_3$ respectively ,then

$\begin{array}{1 1} \frac{E_1}{E_2} =1 \\ \frac{E_1}{E_3} =3 \\ \frac{v_1}{v_2} =2 \\ \frac{v_1}{v_3} =\frac{1}{3}\end{array} $

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