Find the pressure that has to be applied to the ends of a steel wire of length 10 cm to keep its length constant when its temperature is raised by 100°C.
Given: young modulus is 2 × 10¹¹ N/m²
and coefficient of thermal expansion is 1.1×10^-5 K^-1.
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The correct answer is 2.2×10^8 Pa
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