The drawing shows a composite slab consisting of three materials through which heat is conducted from left to right. The materials have identical thicknesses and cross-sectional areas. Rank the materials according to their thermal conductivities, largest first.

(a) k1, k2, k3

(b) k1, k3, k2

(c) k2, k1, k3

(d) k2, k3, k1

(e) k3, k2, k1

Transcribed Image Text:

65 °C 45 °C 30°C 25 °C 3