Questions
A metal bar of length / is covered with some non-conducting material to prevent heat losses from its surface and the two ends are maintained at steady temperatures . In the steady state, the temperature of the bar above the surrounding at distance x from the hot end varies as shown in the graph:
detailed solution
Correct option is B
Heat crossing through any cross-section is same and so the temperature gradient. As the distance is increased from the rod temperature of the region decreases.Talk to our academic expert!
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Water can be heated in a cup of paper because:
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