28 Answer Q 28 29 30 by appropriately matching the information given in the three columns of the following table Consider a non conducting ring of radius r and mass m and a particle of same mass both at rest in free space The particle is on the axis of the ring and far away from the ring An amount of positive charge is uniformly distributed on the ring and the particle is given a positive charge q The particle is imparted a velocity v towards the centre of the ring Consider the consequences given in the columns and answer the following questions Column 1 I Maximum speed of the ring is v II Maximum speed of the ring is v 2 III Maximum speed of the ring is Qq REOmrv IV Maximum speed of the ring 1 is 2 Qg Emrv i Column 2 Minimum speed of the particle is v 2 ii Minimum speed of the particle is zero iii Minimum speed of the particle is 1 Qq iv Minimum speed of the particle is Qq mrv P zero respectively Q Final speed of the ring R Column 3 Final speed of the ring and particle is v and IS S Which of following options is the correct representation if v A II i S B 1 ii P C III iv R and particle is zero and v respectively Final speed of the ring and particle is v 4 and 3v 4 respectively Final speed of the ring and particle is v 2 for both Qq 2 omr D IV iii Q