A positively charged thin metal ring of radius R is fixed in the xy plane with its centre at the origin O. A negatively charged particle P is released from rest at the point `(0, 0, z_0)` where `z_0gt0`. Then the motion of P isA. Periodic ,for all value of `z_(0)`satisfying `0 lt z_(0) oo`B. Simple harmonic for all value of `z_(0)` satisfying `0 lt z_(0) le R`C. Approximately simple harmonic ,provided `z_(0) lt lt R`D. Such that `P` crosses `O` and continues to move along the negative "z-axis" towards `z-=-oo`

A positively charged thin metal ring of radius R is fixed in the xy pl

1.	A positively charged thin metal ring of radius R is fixed in the xy plane with its centre at the origin O. A negatively charged particle P is released from rest at the point `(0, 0, z_0)` where `z_0gt0`. Then the motion of P isA. Periodic ,for all value of `z_(0)`satisfying `0 lt z_(0) oo`B. Simple harmonic for all value of `z_(0)` satisfying `0 lt z_(0) le R`C. Approximately simple harmonic ,provided `z_(0) lt lt R`D. Such that `P` crosses `O` and continues to move along the negative "z-axis" towards `z-=-oo`
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