Q. Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K?
A) 2k1k2/k1+k2
B) K1k2/k1+k2
C) None
D) K1+k2/k1k2
✔ Correct Answer: 2k1k2/k1+k2
Exam Insight
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