Equal temperature difference exists between the ends of two metallic rods 1 and 2 of equal length. Their thermal conductivities are K_(1)and K_(2) and cross sectional areas are resepctively 2 A_(1) and A_(2) .The condition for equal rate of heat transfer will be

Equal temperature difference exists between the ends of two metallic r

1.	Equal temperature difference exists between the ends of two metallic rods 1 and 2 of equal length. Their thermal conductivities are K_(1)and K_(2) and cross sectional areas are resepctively 2 A_(1) and A_(2) .The condition for equal rate of heat transfer will be
Answer» `K_(1) A_(2) = K_(2) A_(1)` `K_(1) A_(2)^(2) = K_(2) A_(1)^(2)` `K_(1)A_(1) = K_(2) A_(2)` `K_(1) A_(1)^(2) = K_(2) A_(2)^(2)` ANSWER :C