Start Free Mock LoginAlready registered? Login here

Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediumsingle choice

Two rods of equal length have their ends at the same temperatures. The first is copper ( $k = 400$ ) with cross-section 1 $c m^{2}$ and the second has $k = 100$ . Find the cross-sectional area in $c m^{2}$ of the second rod that gives the same rate of heat flow.

Options:

Answer:

Solution:

Equal rates need $k_{1} A_{1} = k_{2} A_{2}$ . $A_{2} = \frac{400 \times 1}{100} = 4$ $c m^{2}$ . A.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

⏱ 2m

Doubts & Discussion

Loading discussions...