The unit of heat transfer co-efficient in SI unit is____________________?
Correct answer: B. W/m2°K
- A. J/M2°K
- B. W/m2°K
- C. W/m°K
- D. J/m°K
Explanation
The heat-transfer coefficient relates heat flux to temperature difference, so its SI unit is power per area per temperature difference: W/(m²·K). J/(m²·K) is a unit of heat capacity per area, not a transfer coefficient.
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