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Properties of Matter question

2019 · Q128
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Properties of Matter question

2019 · Q128

NEETPhysicsProperties of MatterMCQ+4 / −1
The unit of thermal conductivity is :
  1. A
    J m–1 K–1
  2. B
    W m K–1
  3. C
    J m K–1
  4. D
    W m–1 K–1
View written solutionFree

Correct answer: D

We know,

Heat transfer (Q) = KA\left( {{{\Delta T} \over {\Delta x}}} \right)$$$ \times $t <br><br>Here, K is the coefficient of thermal conductivity <br><br>J = (K)m<sup>2</sup>${{kelvin} \over m} \times s<br><br> s <br><br>s<br><br> \therefore $ Unit of K = Wm–1 K–1

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