Given n straight lines and a fixed point O,a straight line is drawn through O meeting lines in the points
R1,R2,R3,......Rn and on it a point R is taken such that n/OR=1/OR1+1/OR2+............+1/ORn,then the locus of
R is
options are
(a) a straight line (b) a circle
(c) a parabola (d)None of these
