Which historical document declared the goal of Purna Swaraj (complete independence) for India?

The figure shows a circuit diagram of a Wheatstone bridge to measure the resistance $G$ of the galvanometer. The relation $\frac{P}{Q}=\frac{R}{G}$ will be satisfied only when

Thirteen resistances each of resistance $R \mathrm{\Omega }$ are connected in the circuit, as shown in the following figure. The effective resistance between $A$ and $B$ is

In a meter bridge shown in the figure, the balance point is found to be at $39.5 \mathrm{cm}$ from the end $\mathrm{A}$ when the resistor $\mathrm{X}$ is of $8.2 \mathrm{\Omega }$ and $\mathrm{Y}$ is of $12.5 \mathrm{\Omega }$.
What happens if the galvanometer and cell are interchanged at the balance point of the bridge? Would the galvanometer show any current?

Find the equivalent resistance across the terminals of e.m.f. source of $24 \mathrm{V}$ for the circuit shown in figure

Find equivalent resistance between X and Y