question_answer

In a potentiometer experiment, the. Balancing with a cell is at length 240 cm on shutting the cell with a resistance of \[C{{l}_{2}}\], the balancing length becomes 120 cm. The internal resistance of the cell is

A) \[\text{HCl}\]

B) \[\text{231 kJ mo}{{\text{l}}^{\text{-1}}}\]       

C) \[\text{HCl}\]                                   

D) \[\text{93 kJ mo}{{\text{l}}^{-\text{1}}}\]