Two rods of same length and areas of cross-section `A_(1)` and `A_(2)` have their ends maintained at same temperature. If `K_(1)` and `K_(2)` are their thermal conductivities, `c_(1)` and `c_(2)` are the specific heats of their material and `rho_(1),rho_(2)` their densities, then for the rate of flow by conduction through them to be equal

Options

A. `(A_(1))/(A_(2))=(K_(1))/(c_(1)rho_(1))(c_(2)rho_(2))/(K_(2))`
B. `(A_(1))/(A_(2))=(K_(1))/(K_(2))`
C. `(A_(1))/(A_(2))=(K_(1))/(K_(2))(c_(1)rho_(1))/(c_(2)rho_(2))`
D. `(A_(1))/(A_(2))=(K_(2))/(K_(1))`

Answer

D