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A cylinderical shaped metal rod is used to conduct heat. Whenthe temperature at one end is 100 degree Celsius and at the otherend is 20 degree Celsius, heat is transferred at a rate of 16 J/s.The rod is then stretched uniformly to twice its original length.If again it has ends at 100 degree Celsius and 20 degree Celsius, at what rate will heat be transferred between it ends?

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