Two different metal rods of the same length have their ends kept at the same temperature `theta_(1)`, and `theta_(2)`with `theta_(2) gt theta_(1)`. If `A_(1)` and `A_(2)` are their cross-sectional areas and `K_(1)` and `K_(2)` their thermal conductivities, the rate of flow of heat in the two rods will be the same it:

Two different metal rods of equal lengths and equal areas of cross-section have their ends kept at the same temperature theta_(1) and theta_(2) . if K_(1) and K_(2) are their thermal conductivities, rho_(1) and rho_(2) their densities and S_(1) and S_(2) their specific heats, then the rate of flow of heat in the two rods will be the same if:

Two rods of same length and area of cross-section A_(1)" and" A_(2) have their ends at the same temperature. If K_(1) "and" K_(2) are their thermal conductivities, c_(1) "and" c_(2) are their specific heats and d_(1) "and "d_(2) are their densities, then the rate of flow of heat is the same in both the rods if

The ends of a metal rod are kept at temperature theta_(1) and theta_(2) with theta_(2) gt theta_(1) . At steady state the rate of flow of heat along the rod is directly proportional to

The ends of a metal rod are kept at temperature theta_(1) and theta_(2) with theta_(2) gt theta_(1) . At steady state the rate of flow of heat along the rod is directly proportional to

Two rods of same length and areas of cross section A_1 and A_2 have their ends at same temperature. If K_1 and K_2 are their thermal conductivities, C_1 and C_2 their specific heats and rho_1 and rho_2 are their densities, then the condition that rate of flow of heat is same in both the rods is

Two rods of same length and areas of cross section A_1 and A_2 have their ends at same temperature. If K_1 and K_2 are their thermal conductivities, C_1 and C_2 their specific heats and rho_1 and rho_2 are their densities, then the condition that rate of flow of heat is same in both the rods is

The ends of a metal rod are kept at temperatures theta_1 and theta_2 with theta_2gttheta_1 . The rate of flow of heat along the rod is directly proportional to

The ends of a metal rod are kept at temperatures theta_1 and theta_2 with theta_2gttheta_1 . The rate of flow of heat along the rod is directly proportional to

Two metal rods 1 and 2 of same lengths have same temperature difference between their ends. Their thermal conductivities are K_(1) and K_(2) and cross sectional areas A_(1) and A_(2) respectively. If the rate of heat conduction in 1 is four times that in 2, then