Thermal conductivity of a material may be defined as the
A. Quantity of heat flowing in one second through one cm cube of material when opposite faces are maintained at a temperature difference of 1°C
B. Quantity of heat flowing in one second through a slab of the material of area one cm square, thickness 1 cm when its faces differ in temperature by 1°C
C. Heat conducted in unit time across unit area through unit thickness when a temperature difference of unity is maintained between opposite faces
D. All of the above
Answer: Option D
Solution (By Examveda Team)
Thermal conductivity of a material may be defined as the:- Quantity of heat flowing in one second through one cm cube of material when opposite faces are maintained at a temperature difference of 1°C.
- Quantity of heat flowing in one second through a slab of the material of area one cm square, thickness 1 cm when its faces differ in temperature by 1°C.
- Heat conducted in unit time across unit area through unit thickness when a temperature difference of unity is maintained between opposite faces.
This Question Belongs to Mechanical Engineering >> Heat And Mass Transfer
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