Q40
Thermal diffusivity is
A.
A dimensionless parameter
B.
Function of temperature
C.
Used as mathematical model
D.
A physical property of the material
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Thermal Diffusivity is defined as the ratio of heat conducted to the heat energy stored per unit volume of a material.Its SI unit is m2/s.
It describes how fast heat can be transferred across the medium.
Greater the value of thermal diffusivity, faster is the propagation of heat through the medium.