Question

The quantity of heat flowing for 10 seconds
through a rod of length 40 cm, area 50 cm² is
200 J. If the temperature difference at the ends
of the rod is 80°C, then coefficient of thermal
conductivity of the rod in Wm-'K' is
1) 120 2) 80 3) 20 4) 60​

Answer 1

Answer:

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Answer 2

80

Explanation:

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