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Physics
A hollow spherical shell is compressed to half its radius. The gravitational potential at the centre
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Q. A hollow spherical shell is compressed to half its radius. The gravitational potential at the centre
COMEDK
COMEDK 2000
Gravitation
A
increases
28%
B
decreases
53%
C
remains same
14%
D
during the compression increases then returns at the previous value at the previmis value
6%
Solution:
$ V =-\frac{ GM }{ r } $
Due to the negative sign, when the radius is halved the potential decreases.