Out of the two wires $X$ and $Y$ shown below,which one has greater resistance? Justify your answer.

(B) Wire $Y$ has greater resistance.
Resistance $(R)$ of a conductor is given by the formula $R = \rho \frac{l}{A}$,where $\rho$ is the resistivity,$l$ is the length,and $A$ is the cross-sectional area.
Since both wires have the same cross-sectional area $(A)$ and are made of the same material (same $\rho$),the resistance is directly proportional to the length $(l)$ of the wire $(R \propto l)$.
As the length of wire $Y$ $(2l)$ is greater than the length of wire $X$ $(l)$,wire $Y$ has greater resistance.