Thermal Stress And Thermal Strain MCQ - Practice Questions with Answers

A metal rod of young modulus $Y$ and coefficient of thermal expansion $\alpha$ is held at its two ends such that its length remains invariant. If its temperature is raised by $t^{\circ} \mathrm{C}$ the linear stress developed in it is

When a force is applied at one end of an elastic wire, it produces a strain $\varepsilon$ in the wire. If $Y$ is Young's modulus of the material of the wire, the amount of energy stored per unit volume of the wire is given by

A wire, suspended vertically from one end, is stretched by attaching a weight of 20 N to the lower end. The weight stretches the wire by 1 mm. How much energy is gained by the wire?

A steel rod of diameter 1 cm is clamped firmly at each end when its temperature is $25^{\circ} \mathrm{C}$. So that it can't contract on cooling. The tension in the road $0^{\circ} \mathrm{C}$ is approximate. (Take, $\alpha=10^{-5} 1^{\circ} \mathrm{c}, y=2 \times 10^{11} \mathrm{~N} / \mathrm{m}^2$ )

The temperature of a body on kelvin scale is found to be . When it is measured by fahrenheit thermometer, it is found to be , then the value of  is -