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Mechanical Engineering
MEDIUM
ENGLISH
Mechanical Engineering
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
Option A
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
Option B
C
heat conducted in unit time across unit area through unit thickness when a temperature difference of unity is maintained between opposite faces
Option C
all of the above
Correct answer
Correct answer: D
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