Class 11 NEET Physics Work, Energy and Power Questions

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Question : 39 of 91
 
Marks: +1, -0
The potential energy of a particle in a force field is
U=
A
r2
−
B
r

where A and B are positive constants and r is the distance of particle from the center of the field. For stable equilibrium, the distance of the particle is
(2012)
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