For a wall made of several different slabs placed one after another
PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
For a wall made of several different slabs placed one after another, each having the same cross-sectional area, which statement is correct at steady state?
(a) Heat current differs from slab to slab; the temperature drop is the same for all slabs.
(b) Heat current is the same through every slab; the temperature drop across a slab is proportional to its thickness L only.
(c) Heat current is the same through every slab; the temperature drop across a slab is proportional to kL of that slab.
(d) Heat current is the same through every slab; the temperature drop across a slab is proportional to its thermal conductivity k.}