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The temperature gradient across a copper rod of thickness...

The temperature gradient across a copper rod of thickness 0.02m, maintained at two temperature junctions of 20°C and 80°C respectively is

A.

3.0 x 102Km-1

B.

3.0 x 103Km-1

C.

5.0 x 103Km-1

D.

3.0 x 104Km-1

Correct answer is B

Temperature Gradient = Δtemp.thickness

= 80200.02

= 600.02

= 3000Km-1

= 3.0 x 103Km-1