Let us say there are two rods having same dimensions, one made of brass (k = 85W

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Let us say there are two rods having same dimensions, one made of brass (k = 85W/m K) and the other of copper (k = 375W/m K), having one of their ends inserted into a furnace. At a section 10.5 cm away from the furnace, the temperature of brass rod is 120 degree Celsius. Find the distance at which the same temperature would be reached in the copper rod? Both ends are exposed to the same environment

Options:

A . 12.54 cm

B . 45.87 cm

C . 12.34 cm

D . 22.05 cm

Answer: Option D
Answer: (d).22.05 cm

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