List of top Physics Questions on Thermal Expansion asked in AP EAPCET

The pressure applied on a cube from all sides is \(P\). In order to keep its volume constant, the temperature of the cube is to be raised by (The bulk modulus and the coefficient of volume expansion of the material of the cube are \(\beta\) and \(\alpha\) respectively)
Two rods made of metals A and B, each of length \(20\,\text{cm}\), expand by \(0.075\,\text{cm}\) and \(0.045\,\text{cm}\) respectively, when heated from \(0^\circ\text{C}\) to \(100^\circ\text{C}\). A composite rod of the same length is made with a portion of metal A and the remaining portion with B. The composite rod expands by \(0.060\,\text{cm}\) for the same rise in temperature. Then the portion of the composite rod made of A has initial length
A steel rod of length \(5\,\text{m}\) and radius \(2\,\text{cm}\) is heated by \(10^\circ\text{C}\). Find the % change in volume \(\left(\alpha = 10 \times 10^{-6}\,^\circ\text{C}^{-1}\right)\):
An iron sphere having diameter \(D\) and mass \(M\) is immersed in hot water so that the temperature of the sphere increases by \(\delta T\). If \(\alpha\) is the coefficient of linear expansion of the iron then the change in the surface area of the sphere is
A metal tape is calibrated at \(25^\circ C\). On a cold day when the temperature is \(-15^\circ C\), the percentage error in the measurement of length is
Coefficient of linear expansion of metal \(=1\times10^{-5}\;^\circ C^{-1}\)