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 1000C is :
(For steel Young’s modulus is 2 x 1011 N m-2 and coefficient of thermal expansion is 1.1 x 10-5 K-1)
2.2 x108 Pa
2.2 x109 Pa
2.2 x107 Pa
2.2 x106 Pa
As we have learned
Thermal Strain -
- wherein
Thermal strain
Thermal stess = Y strain
Pressure required =
Option 1)
2.2 x108 Pa
Option 2)
2.2 x109 Pa
Option 3)
2.2 x107 Pa
Option 4)
2.2 x106 Pa
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