Let V and E be the gravitational potential and gravitational field at a distance r from the Centre of a uniform spherical shell. Consider the following two statements:
(A)The plot of V against r is discontinuous
(B)The plot of E against r is discontinuous
Here, (a) is false as V is constant inside a spherical shell and is equal to 
where a is the radius of the shell, after which it decreases to zero as 
. Option (b) is true as the electric field inside a shell is zero but just outside the shell, its 
which decreases to zero as 
.
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