Thermal Properties of Matter - Result Question 17

17. The two ends of a metal rod are maintained at temperatures 100C and 110C. The rate of heat flow in the rod is found to be 4.0J/s. If the ends are maintained at temperatures 200C and 210C, the rate of heat flow will be [2015]

(a) 16.8J/s

(b) 8.0J/s

(c) 4.0J/s

(d) 44.0J/s

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Answer:

Correct Answer: 17. (c)

Solution:

  1. (c) As the temperature difference ΔT=10C as well as the thermal resistance is same for both the cases, so thermal current or rate of heat flow will also be same for both the cases.


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