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If the linear expansivity of a metal rod is \(4 \times 10^{-5}\) per \({ }^{\circ} C\), ...

If the linear expansivity of a metal rod is \(4 \times 10^{-5}\) per \({ }^{\circ} C\), what will be the new length of the rod if it is heated from \(15^{\circ} C\) to \(95^{\circ} C\) from its original length of \(20 cm\)

A. \(0.064 cm\)
B. \(0.64 cm\)
C. \(20.64 cm\)
D. \(20.064 cm\)




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