Current Electricity

In a meter bridge experiment, the balance point is obtained at length \(\ell_1 \mathrm{~cm}\) from left end when resistances in the left gap and right gap are \(5 \Omega\) and \(R \Omega\) respectively. When the resistance \(R\) is shunted with equal resistance, the new balance point is at \(1.6 \ell_1\). The resitance \(R\) in ohm is