Which of the following expresses the thermal diffusivity of a substance in terms of thermal conductivity of a substance (k), mass density ( ) and specific heat (c)?

Which of the following expresses the thermal diffusivity of a substanc

1.	Which of the following expresses the thermal diffusivity of a substance in terms of thermal conductivity of a substance (k), mass density ( ) and specific heat (c)?
A.	k<sup>2</sup> c
B.	1/ kc
C.	k/ c
D.	c/k<sup>2</sup>
Answer» D. c/k<sup>2</sup>

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Which of the following expresses the thermal diffusivity of a substance in terms of thermal conductivity of a substance (k), mass density ( ) and specific heat (c)?

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