JEE Mains 1-Feb-2023 Shift 1 Solved Paper

In an experiment to find emf of a cell using potentiometer, the length of null point for a cell of emf 1.5V is found to be 60‌cm. If this cell is replaced by another cell of emf E. the length-of null point increases by 40‌cm. The value of E is ‌

x

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V. The value of x is ________.