A wire of length 60 cm is bent into a circle with a gap of 1 cm. At its ends, on heating it by 100°C, the length of the gap increases to 1.02 cm. α of material of wire is
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A wire of length 60 cm is bent into a circle with a gap of 1 cm. At its ends, on heating it by 100°C, the length of the gap increases to 1.02 cm. α of material of wire is