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JEEMAIN-2015
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Q)
From a solid sphere of mass M and radius R, a spherical portion of radius
R
2
is removed , as shown in fig. Taking gravitational potential
V
=
0
at
r
=
∞
, the potential at the center of the cavity thus formed is:
−
2
G
M
R
−
G
M
2
R
−
G
M
R
−
2
G
M
3
R
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