Start Free Mock LoginAlready registered? Login here

Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediumsingle choice

The ratio of the thermal conductivities of two rods of different materials is 5 : 4. The two rods of the same area of cross-section and the same thermal resistance will have lengths in the ratio:

Options:

Answer:

Solution:

$R = \frac{l}{k A}$ is the same, so $\frac{l _{1}}{l _{2}} = \frac{k _{1}}{k _{2}} = 5 : 4$ . D.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

⏱ 2m

Doubts & Discussion

Loading discussions...