Assertion (A) Two condensers of same capacity are connected first...

Given, two capacitors of same capacities $C$. In series, equivalent capacitance is given by $$\begin{aligned} & \frac{1}{C_S}=\frac{1}{C_1}+\frac{1}{C_2}=\frac{1}{C}+\frac{1}{C}=\frac{2}{C} \\ & C_S=\frac{C}{2}\end{aligned}$$ In parallel, equivalent capacitance is given by $C_P=C_1+C_2=C+C=2 C$ Ratio $=\frac{C_P}{C_S}=\frac{2 C}{\left(\frac{C}{2}\right)}=\frac{4}{1}$ $\Rightarrow \quad C_P: C_S=4: 1$ Hence, Assertion is true In parallel, $C_P>C$ In series, $C_S < C$ So, in parallel, capacity is increased but in series, capacity is decreased. Hence, Reason is also true, but it is not the correct explanation of Assertion.