TS EAMCET 4 May 2018 Shift 2 Solved Paper

Section: Physics
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Question : 105 of 160
 
Marks: +1, -0
The volume charge density in a spherical ball of radius Rvaries with distance r from the centre as ρ(r)=ρ0[1(
r
R
)
3
]
where ρ0 is a constant. The radius at which the field would be maximum is
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