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in the annular region of a charged cylindrical capacitor

(a) is same throughout
(b) is higher near the outer cylinder than near the inner cylinder
(c) varies as 1/r, where r is the distance from axis
(d) varies as 1/r², where r is the distance from the axis

Chemistry

The geometry of Ni(CO)₄ and Ni(PPh₃)₂Cl₂ are

(a) both square planar (b) tetrahedral and square planar, respectively

(c) both tetrahedral (d) square planar and tetrahedral, respectively

Mathematics

A variable chord is drawn through the origin to the circle x² + y² – 2ax = 0. The locus of the center of the circle drawn on this chord as diameter is

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