Cork has a low thermal conductivity of _____ W/m K. A. 0.01 B.

cork-has-a-low-thermal-conductivity-of-w-m-k-a-0-01-b

Cork has a low thermal conductivity of _____ W/m K.

A. 0.01

B. 0.04

C. 0.07

D. 0.1

I have been asked this question by my college director while I was bunking the class.

Query is from Properties of Insulation in chapter Magnetic & Insulating Materials of Engineering Material & Metallurgy

The correct option is C. 0.07

To explain I would say: Cork is a typical insulating material which has a low thermal conductivity of 0.07 W/m K. This causes the material to be porous in nature. Cotton also has a low thermal conductivity of 0.04 W/m K.