एक मिश्रित स्लैब में तापीय चालकता k1 और k2 के साथ विभिन्न पदार्थों की दो परतें हैं। यदि प्रत्येक परत की मोटाई समान है, तो स्लैब की तुल्य तापीय चालकता होगी:

This question was previously asked in
BPSC AE Paper 5 (Mechanical) 25th March 2022 Official Paper
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  1. \(k_1+k_2\)
  2. \({k_1 + k_2} \over k_1.k_2\)
  3. \({2k_1.k_2} \over k_1+k_2\)
  4. \(k_1.k_2\)

Answer (Detailed Solution Below)

Option 3 : \({2k_1.k_2} \over k_1+k_2\)
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