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Questions  

A planet has mass 1/10 of that of earth, while radius is 1/3 that of earth. If a person can throw a stone on earth surface to a height of 90m, then he will be able to throw the stone on that planet to a height-

a
90m
b
40m
c
100m
d
45m

detailed solution

Correct option is C

g=GmR2; g′/g=110312=910:g′g=910

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