In the arrangement shown in figure when the switch S2 is open, the galvanometer shows no deflection for 1 = . When the switch S2 is closed, the galvanometer shows no deflection for I = The internal resistance () of 6 V cell, and the emf E of the other battery are respectively :- 102 W VIV LHA- E Si 31,8 V 2 21, 12 V 3 20, 24 V 4 30,12 V