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(C) The 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

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Will remain the same

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(C) The 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 area of cross-section.Initially,$R_1 = \rho \frac{l}{A}$.When the length is doubled $(l' = 2l)$ and the area of cross-section is doubled $(A' = 2A)$,the new resistance $R_2$ is:$R_2 = \rho \frac{l'}{A'} = \rho \frac{2l}{2A} = \rho \frac{l}{A}$.Comparing the two,we find $R_2 = R_1$.Therefore,the resistance will remain the same.

When the length and area of cross-section both are doubled,then its resistance

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