Start Free Mock LoginAlready registered? Login here

Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediumsingle choice

The ratio of the coefficients of thermal conductivity of two different materials is 5 : 3. If the thermal resistances of the rods of these materials are the same, then the ratio of the lengths of these rods is:

Options:

Answer:

Solution:

$R = \frac{l}{k A}$ for equal areas gives $\frac{l _{1}}{l _{2}} = \frac{k _{1}}{k _{2}} = \frac{5}{3}$ . B.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

⏱ 2m

Doubts & Discussion

Loading discussions...