The radius of earth is about 6400Km and ...

The radius of earth is about 6400Km and that of mars is about 3200 km The mass of the earth is about 10 times the mass of mars. An object weight 200N on earth 's surface, then its weight on the surface of mars will be:

A

8 N

B

40 N

C

20 N

D

80 N

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