Gce Model Questions Vol1 2022 Physics Question 37
Practice objective / multiple choice question 37 from the 2022 Gce Model Questions Vol1 Physics examination.
A composite wall consists of a 0.15 m thick brick layer (thermal conductivity \(k_1=0.72\ \text{W·m}^{-1}\text{K}^{-1}\)) and an insulation layer of unknown conductivity \(k_2\) that is 0.05 m thick. The wall area is \(2.0\ \text{m}^2\). The indoor temperature is \(20^{\circ}\text{C}\) and the outdoor temperature is \(-5^{\circ}\text{C}\). The measured steady‑state heat loss through the wall is \(120\ \text{W}\). Determine \(k_2\).
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About This Question
This is Gce Model Questions Vol1 2022 Physics Question 37. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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