List of top Physics Questions on Calorimetry asked in COMEDK UGET

The rate of heat conduction in the given two metal rods having the same length is found to be the same when the temperature difference between the ends is kept \(30^\circ C\). If the area of cross section of the first rod is \(8 \times 10^{-2}\,\text{m}^2\), then what will be area of cross section of the second rod? [Given that the ratio of the thermal conductivity of the first rod to that of the second rod is \(1:4\)]

Rods \( A \) and \( B \) have their lengths in the ratio \( 1 : 2 \). Their thermal conductivities are \( K_1 \) and \( K_2 \) respectively. The temperatures at the ends of each rod are \( T_1 \) and \( T_2 \). If the rate of flow of heat through the rods is equal, the ratio of area of cross section of \( A \) to that of \( B \) is