Heat and Thermal ExpansionEasy
Question
A wire of cross-sectional area 3 mm2 is first stretched between two fixed points at a temperature of 20oC. Determine the tension when the temperature falls to 10oC. Coefficient of linear expansion α = 10-5 oC-1 and Y = 2 × 1011 N/m2 :
Options
A.20 N
B.30 N
C.60 N
D.120 N
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