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The initial temperature of an iron rod is $84.2 \pm 0.6 ^{\circ}C$. It is cooled to a temperature of $60.8 \pm 0.8 ^{\circ}C$. What is the fall in temperature of the iron rod?

1 Answer

$ 23.4 \pm 1.4 ^{\circ}$ C
Hence (B) is the correct answer.
answered Jun 1, 2014 by thanvigandhi_1

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