NEET · Physics · STD 11 - 1. units,dimensions and measurement
The unit of thermal conductivity is
- A \(\mathrm{J} \mathrm{m} \mathrm{K}^{-1}\)
- B \(\mathrm{Jm}^{-1} \mathrm{K}^{-1}\)
- C \(\mathrm{W} \mathrm{m} \mathrm{K}^{-1}\)
- D \(\mathrm{Wm}^{-1} \mathrm{K}^{-1}\)
Answer & Solution
Correct Answer
(D) \(\mathrm{Wm}^{-1} \mathrm{K}^{-1}\)
Step-by-step Solution
Detailed explanation
\(\frac{\mathrm{dQ}}{\mathrm{dt}}=-(\mathrm{K}) \mathrm{A} \frac{\mathrm{dT}}{\mathrm{dx}}\) \(\frac{\mathrm{J}}{\mathrm{s}}=(\mathrm{K}) \mathrm{m}^{2} \frac{\mathrm{kelvin}}{\mathrm{m}}\)
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