A Daniel cell is balanced on 125 cm leng...

A Daniel cell is balanced on `125 cm` length of a potentiometer wire. Now the cells is short-circuited by a resistance `2 ohm` and the balance is obtained at `100 cm`. The internal resistance of the Dainel cell is

`0.5` ohm

`1.5` ohm

`1.25` ohm

`4//5` ohm

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