Two planets have radii r and 2r and densities are d and 4d respectively. The ratio of their acceleration due to gravities is

Two planets have radii r and 2r and densities are d and 4d respectivel

1.	Two planets have radii r and 2r and densities are d and 4d respectively. The ratio of their acceleration due to gravities is
A.	1 : 8
B.	8 : 1
C.	4 : 1
D.	1 : 4
Answer» B. 8 : 1

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Two planets have radii r and 2r and densities are d and 4d respectively. The ratio of their acceleration due to gravities is

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