Thermal Expansion
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PHXI11:THERMAL PROPERTIES OF MATTER

366734 A copper rod of \(88\;cm\) and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is :\(\left(\alpha_{c u}=1.7 \times 10^{-5} K^{-1}\right.\) and \(\left.\alpha_{A l}=2.2 \times 10^{-5} K^{-1}\right)\)

1 \(6.8\;cm\)
2 \(113.9\;cm\)
3 \(88\;cm\)
4 \(68\;cm\)
PHXI11:THERMAL PROPERTIES OF MATTER

366735 The figure shows a rectangular brass plate at \(0^\circ C\) in which there is a rectangular hole of dimensions indicated. If the temperature of the plate is raised to \(150^\circ C\).
supporting img

1 \(x\) will increase and \(y\) will decrease
2 \(x\) will decrease and \(y\) will increase
3 Both \(x\) and \(y\) will increase
4 All the dimensions\(x,y\)and \(z\) increase
PHXI11:THERMAL PROPERTIES OF MATTER

366736 An iron rod of length \(50\;cm\) is joined at an end to an aluminium rod of length \(100\;cm\). All measurements refer to \(20^\circ C\). The coefficients of linear expansion of iron and aluminium are \(12 \times {10^{ - 6}}/^\circ C\) and \(24 \times {10^{ - 6}}/^\circ C\), respectively. The length of composite system is:

1 \(150.8\;cm\)
2 \(151.2\;cm\)
3 \(152\;cm\)
4 \(150.24\;cm\)
PHXI11:THERMAL PROPERTIES OF MATTER

366737 A semicircular metal ring subtends an angle of \(180^{\circ}\) at the center of the circle. When it is heated, this angle

1 Remains constant
2 Increases slightly
3 Decreases slightly
4 Becomes \(360^{\circ}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366734 A copper rod of \(88\;cm\) and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is :\(\left(\alpha_{c u}=1.7 \times 10^{-5} K^{-1}\right.\) and \(\left.\alpha_{A l}=2.2 \times 10^{-5} K^{-1}\right)\)

1 \(6.8\;cm\)
2 \(113.9\;cm\)
3 \(88\;cm\)
4 \(68\;cm\)
PHXI11:THERMAL PROPERTIES OF MATTER

366735 The figure shows a rectangular brass plate at \(0^\circ C\) in which there is a rectangular hole of dimensions indicated. If the temperature of the plate is raised to \(150^\circ C\).
supporting img

1 \(x\) will increase and \(y\) will decrease
2 \(x\) will decrease and \(y\) will increase
3 Both \(x\) and \(y\) will increase
4 All the dimensions\(x,y\)and \(z\) increase
PHXI11:THERMAL PROPERTIES OF MATTER

366736 An iron rod of length \(50\;cm\) is joined at an end to an aluminium rod of length \(100\;cm\). All measurements refer to \(20^\circ C\). The coefficients of linear expansion of iron and aluminium are \(12 \times {10^{ - 6}}/^\circ C\) and \(24 \times {10^{ - 6}}/^\circ C\), respectively. The length of composite system is:

1 \(150.8\;cm\)
2 \(151.2\;cm\)
3 \(152\;cm\)
4 \(150.24\;cm\)
PHXI11:THERMAL PROPERTIES OF MATTER

366737 A semicircular metal ring subtends an angle of \(180^{\circ}\) at the center of the circle. When it is heated, this angle

1 Remains constant
2 Increases slightly
3 Decreases slightly
4 Becomes \(360^{\circ}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366734 A copper rod of \(88\;cm\) and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is :\(\left(\alpha_{c u}=1.7 \times 10^{-5} K^{-1}\right.\) and \(\left.\alpha_{A l}=2.2 \times 10^{-5} K^{-1}\right)\)

1 \(6.8\;cm\)
2 \(113.9\;cm\)
3 \(88\;cm\)
4 \(68\;cm\)
PHXI11:THERMAL PROPERTIES OF MATTER

366735 The figure shows a rectangular brass plate at \(0^\circ C\) in which there is a rectangular hole of dimensions indicated. If the temperature of the plate is raised to \(150^\circ C\).
supporting img

1 \(x\) will increase and \(y\) will decrease
2 \(x\) will decrease and \(y\) will increase
3 Both \(x\) and \(y\) will increase
4 All the dimensions\(x,y\)and \(z\) increase
PHXI11:THERMAL PROPERTIES OF MATTER

366736 An iron rod of length \(50\;cm\) is joined at an end to an aluminium rod of length \(100\;cm\). All measurements refer to \(20^\circ C\). The coefficients of linear expansion of iron and aluminium are \(12 \times {10^{ - 6}}/^\circ C\) and \(24 \times {10^{ - 6}}/^\circ C\), respectively. The length of composite system is:

1 \(150.8\;cm\)
2 \(151.2\;cm\)
3 \(152\;cm\)
4 \(150.24\;cm\)
PHXI11:THERMAL PROPERTIES OF MATTER

366737 A semicircular metal ring subtends an angle of \(180^{\circ}\) at the center of the circle. When it is heated, this angle

1 Remains constant
2 Increases slightly
3 Decreases slightly
4 Becomes \(360^{\circ}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366734 A copper rod of \(88\;cm\) and an aluminium rod of unknown length have their increase in length independent of increase in temperature. The length of aluminium rod is :\(\left(\alpha_{c u}=1.7 \times 10^{-5} K^{-1}\right.\) and \(\left.\alpha_{A l}=2.2 \times 10^{-5} K^{-1}\right)\)

1 \(6.8\;cm\)
2 \(113.9\;cm\)
3 \(88\;cm\)
4 \(68\;cm\)
PHXI11:THERMAL PROPERTIES OF MATTER

366735 The figure shows a rectangular brass plate at \(0^\circ C\) in which there is a rectangular hole of dimensions indicated. If the temperature of the plate is raised to \(150^\circ C\).
supporting img

1 \(x\) will increase and \(y\) will decrease
2 \(x\) will decrease and \(y\) will increase
3 Both \(x\) and \(y\) will increase
4 All the dimensions\(x,y\)and \(z\) increase
PHXI11:THERMAL PROPERTIES OF MATTER

366736 An iron rod of length \(50\;cm\) is joined at an end to an aluminium rod of length \(100\;cm\). All measurements refer to \(20^\circ C\). The coefficients of linear expansion of iron and aluminium are \(12 \times {10^{ - 6}}/^\circ C\) and \(24 \times {10^{ - 6}}/^\circ C\), respectively. The length of composite system is:

1 \(150.8\;cm\)
2 \(151.2\;cm\)
3 \(152\;cm\)
4 \(150.24\;cm\)
PHXI11:THERMAL PROPERTIES OF MATTER

366737 A semicircular metal ring subtends an angle of \(180^{\circ}\) at the center of the circle. When it is heated, this angle

1 Remains constant
2 Increases slightly
3 Decreases slightly
4 Becomes \(360^{\circ}\)