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Question

Three planets of same density and with radii R1,R2 and R3, such that R1=2R2=3R3, have gravitation fields on the surfaces E1,E2,E3 and escape velocities v1,v2,v3 respectively, Then

A
E1E2=12
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B
E1E3=3
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C
v1v2=2
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D
v1v3=13
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