Unit of thermal conductivity in M.K.S. units is

A. K cal/kg m² °C

B. K cal m/hr m² °C

C. K cal/hr m² °C

D. K calm/hr °C

Answer: Option B

Solution(By Examveda Team)

Thermal Conductivity is the quantity of heat that passes in unit time through unit area of a substance whose thickness is unity, when its opposite faces differ in temperature by one degree.
Unit of thermal conductivity in M.K.S. units is K cal m/hr m² °C.