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A heat source at T = 10^(3) K is connec...

A heat source at T = `10^(3)` K is connected to another heat reservoir at T = `10^(2)` K by a copper slab which is 1 m thick. Given that the thermal conductivity of copper is 0.1 `WK^(-1)m^(-1)`, the energy flux through it in steady state is :

A

90 W `m^(-2)`

B

120 W `m^(-2)`

C

65 W `m^(-2)`

D

200 W `m^(-2)`

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