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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 ^re maintained at a temperature difference of 1°C [Wrong Answer] |
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 [Wrong Answer] |
C. | heat conducted in unit time across unit area through unit thickness when a temperature difference of unity is maintained between opposite faces [Wrong Answer] |
D. | all of the above [Correct Answer] |
E. | none of the above. [Wrong Answer] |