In potentiometer experiment two cell of emf of ε1 and ε2 combined in series (ε1> ε2) for it balance length obtained at

In potentiometer experiment two cell of emf of ε₁ and ε₂ combined in series (ε₁> ε₂) for it balance length obtained at 60 cm. If the polarity of the cell having lower emf is then the balance length achieves at 20 cm for the combination. Find out the ratio of emf’s ε₁ and ε₂

In potentiometer experiment two cell of emf of ε1 and ε2 combined in series (ε1> ε2) for it balance length obtained at 60 cm.

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