The height at which the weight of a body becomes 
, its weight on the surface of earth (radius 
), is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
: Acceleration due to gravity at a height 
from the surface of earth is
(i)
where 
is the acceleration due to gravity at the surface of earth and 
is the radius of earth. Multiplying by 
(mass of the body) on both sides in (i), we get
Weight of body at height 
Weight of body at surface of earth, 
According to question, 
or 
or 
or 
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