The coefficient of linear expansion of steel is

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

The coefficient of linear expansion of steel is 1.1×10−5 K−11.1\times10^{-5}\,\text{K}^{-1}. Find the approximate value of its coefficient of superficial expansion β. (a) 1.1×10−5 K−11.1\times10^{-5}\,\text{K}^{-1} (b) 0.55×10−5 K−10.55\times10^{-5}\,\text{K}^{-1} (c) 2.2×10−5 K−12.2\times10^{-5}\,\text{K}^{-1} (d) 3.3×10−5 K−13.3\times10^{-5}\,\text{K}^{-1}

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