The ratio of escape velocity at earth 
to the escape velocity at a planet 
whose radius and mean density are twice as that of earth is [NEET 2016]
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Since, the escape velocity of earth can be given as
As it is given that the radius and mean density of planet are twice as that of earth. So, escape velocity at planet will be 
… (ii)
Divide, Eq. (i) by Eq. (ii), we get
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