1.

If the mass of earth is 80 times of that of a planet and diameter is double that of planet and ?g? on earth is \[9.8\,m/{{s}^{2}}\], then the value of ?g? on that planet is [Pb. PMT 1999; CPMT 2000]

A.    \[4.9\,m/{{s}^{2}}\]
B.   \[0.98\,m/{{s}^{2}}\]
C.    \[0.49\,m/{{s}^{2}}\]
D.   \[49\,m/{{s}^{2}}\]
Answer» D.   \[49\,m/{{s}^{2}}\]


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