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TWO PLANETS A AND B HAVE SAME MATERIAL DENSITY.IF RADIUS OF A IS TWICE THAT OF B, THEN RATIO OF ESCAPE VELOCITIES OF A AND B IS ?
Ve = sqrt (2GM/r)
V2*r = constant
Va2*ra= Vb2*rb
2*Va2= Vb2
Va/Vb = 2-1/2
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regards
Ramesh
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