The escape velocity of a body on the surface of the earth is 11.2 
. If the earth’s mass increases to twice its present value and radius of the earth becomes half, the escape velocity becomes
A
22.4 
B
44.8 
C
5.6 
D
11.2 
.
.
Text Solution
Verified by ExpertsThe correct answer is:
A
: Escape velocity of a body 
; New mass of the earth 
and new
radius of the earth 
Escape velocity 
Therefore 
or, 
km/sec.
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