Q109
Thermal diffusivity of a substance is
A.
Directly proportional to the thermal conductivity
B.
Inversely proportional to density of substance
C.
Inversely proportional to specific heat
D.
All of the above
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
The thermal diffusivity of a substance or material is the thermal conductivity divided by the density and specific heat capacity at constant pressure and is a measure the rate of transfer of heat of a substance or material from the hot side to the cold side.