STANDARDPhysics-Thermal Properties of Matter
STANDARD Physics Thermal Conductivity MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Consider a composite slab consisting of two different materials having equal thickness and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is
A
2/3 K
B
√2K
C
3 K
D
4/3 K
Correct Answer
Option A
Detailed Explanation
For materials in parallel, the equivalent thermal conductivity is the weighted average based on their conductivities and thicknesses. Here, it simplifies to 2/3 K.
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