Thermal Expansion
« Previous Topic: Newton’s Law of Cooling Last Topic in »
PHXI11:THERMAL PROPERTIES OF MATTER

366772 An isosceles triangle is formed with in a rod of length \(l_{1}\) and coefficient of linear expansion \(\alpha_{1}\) as the base and two thin rods each of length \(l_{2}\) and coefficient of linear expansions \(\alpha_{2}\) as the two sides. If the distance between the apex and the midpoint of the base remain unchanged as the temperature is varied, then
supporting img

1 \(\dfrac{l_{1}}{l_{2}}=2 \sqrt{\dfrac{\alpha_{2}}{\alpha_{1}}}\)
2 \(\dfrac{l_{1}}{l_{2}}=\sqrt{\dfrac{\alpha_{2}}{\alpha_{1}}}\)
3 \(\dfrac{l_{1}}{l_{2}}=\dfrac{\alpha_{2}}{\alpha_{1}}\)
4 \(\dfrac{l_{1}}{l_{2}}=\dfrac{2 \alpha_{2}}{\alpha_{1}}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366773 A hole is drilled in a copper sheet. The diameter of the hole is \(4.24\;cm\) at \(27^\circ C\). What is the change in the diameter of the hole when the sheet is heated to \(227^\circ C\) ? Coefficient of linear expansion of copper is \(1.70 \times {10^{ - 5}}/\,^\circ C\).

1 \(1.44 \times {10^{ - 2}}\;cm\)
2 \(2.44 \times {10^{ - 3}}\;cm\)
3 \(1.44 \times {10^{ - 2}}\;mm\)
4 \(2.44 \times {10^{ - 2}}\;mm\)
NCERT Exempler
PHXI11:THERMAL PROPERTIES OF MATTER

366774 A bimetallic strip consists of metals \(X\) and \(Y\). It is mounted rigidly at the base as shown. The metal \(X\) has a higher coefficient of expansion compared to that for metal \(Y\). When bimetallic strip is placed in a hot bath:
supporting img

1 It will bend towards the right
2 It will bend towards the left
3 It will neither bend nor shrink
4 It will not bend but shrink
PHXI11:THERMAL PROPERTIES OF MATTER

366775 As the temperature is increased, the time period of a pendulum.

1 Increase as the effective length increases even though its centre of mass still remains at the centre of the bob.
2 Decreases as its effective length increases even through its centre of mass still remains at the centre of the bob.
3 Increases as its effective length increases due to shifting of centre of mass below below centre of the bob
4 Decreases as its effective length increases remains same but centre of the mass shifts above the centre of the bob.
NCERT Exempler
For More Updates join with Us
PHXI11:THERMAL PROPERTIES OF MATTER

366772 An isosceles triangle is formed with in a rod of length \(l_{1}\) and coefficient of linear expansion \(\alpha_{1}\) as the base and two thin rods each of length \(l_{2}\) and coefficient of linear expansions \(\alpha_{2}\) as the two sides. If the distance between the apex and the midpoint of the base remain unchanged as the temperature is varied, then
supporting img

1 \(\dfrac{l_{1}}{l_{2}}=2 \sqrt{\dfrac{\alpha_{2}}{\alpha_{1}}}\)
2 \(\dfrac{l_{1}}{l_{2}}=\sqrt{\dfrac{\alpha_{2}}{\alpha_{1}}}\)
3 \(\dfrac{l_{1}}{l_{2}}=\dfrac{\alpha_{2}}{\alpha_{1}}\)
4 \(\dfrac{l_{1}}{l_{2}}=\dfrac{2 \alpha_{2}}{\alpha_{1}}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366773 A hole is drilled in a copper sheet. The diameter of the hole is \(4.24\;cm\) at \(27^\circ C\). What is the change in the diameter of the hole when the sheet is heated to \(227^\circ C\) ? Coefficient of linear expansion of copper is \(1.70 \times {10^{ - 5}}/\,^\circ C\).

1 \(1.44 \times {10^{ - 2}}\;cm\)
2 \(2.44 \times {10^{ - 3}}\;cm\)
3 \(1.44 \times {10^{ - 2}}\;mm\)
4 \(2.44 \times {10^{ - 2}}\;mm\)
NCERT Exempler
PHXI11:THERMAL PROPERTIES OF MATTER

366774 A bimetallic strip consists of metals \(X\) and \(Y\). It is mounted rigidly at the base as shown. The metal \(X\) has a higher coefficient of expansion compared to that for metal \(Y\). When bimetallic strip is placed in a hot bath:
supporting img

1 It will bend towards the right
2 It will bend towards the left
3 It will neither bend nor shrink
4 It will not bend but shrink
PHXI11:THERMAL PROPERTIES OF MATTER

366775 As the temperature is increased, the time period of a pendulum.

1 Increase as the effective length increases even though its centre of mass still remains at the centre of the bob.
2 Decreases as its effective length increases even through its centre of mass still remains at the centre of the bob.
3 Increases as its effective length increases due to shifting of centre of mass below below centre of the bob
4 Decreases as its effective length increases remains same but centre of the mass shifts above the centre of the bob.
NCERT Exempler
NEET DIGITAL LIBRARY
PHXI11:THERMAL PROPERTIES OF MATTER

366772 An isosceles triangle is formed with in a rod of length \(l_{1}\) and coefficient of linear expansion \(\alpha_{1}\) as the base and two thin rods each of length \(l_{2}\) and coefficient of linear expansions \(\alpha_{2}\) as the two sides. If the distance between the apex and the midpoint of the base remain unchanged as the temperature is varied, then
supporting img

1 \(\dfrac{l_{1}}{l_{2}}=2 \sqrt{\dfrac{\alpha_{2}}{\alpha_{1}}}\)
2 \(\dfrac{l_{1}}{l_{2}}=\sqrt{\dfrac{\alpha_{2}}{\alpha_{1}}}\)
3 \(\dfrac{l_{1}}{l_{2}}=\dfrac{\alpha_{2}}{\alpha_{1}}\)
4 \(\dfrac{l_{1}}{l_{2}}=\dfrac{2 \alpha_{2}}{\alpha_{1}}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366773 A hole is drilled in a copper sheet. The diameter of the hole is \(4.24\;cm\) at \(27^\circ C\). What is the change in the diameter of the hole when the sheet is heated to \(227^\circ C\) ? Coefficient of linear expansion of copper is \(1.70 \times {10^{ - 5}}/\,^\circ C\).

1 \(1.44 \times {10^{ - 2}}\;cm\)
2 \(2.44 \times {10^{ - 3}}\;cm\)
3 \(1.44 \times {10^{ - 2}}\;mm\)
4 \(2.44 \times {10^{ - 2}}\;mm\)
NCERT Exempler
PHXI11:THERMAL PROPERTIES OF MATTER

366774 A bimetallic strip consists of metals \(X\) and \(Y\). It is mounted rigidly at the base as shown. The metal \(X\) has a higher coefficient of expansion compared to that for metal \(Y\). When bimetallic strip is placed in a hot bath:
supporting img

1 It will bend towards the right
2 It will bend towards the left
3 It will neither bend nor shrink
4 It will not bend but shrink
PHXI11:THERMAL PROPERTIES OF MATTER

366775 As the temperature is increased, the time period of a pendulum.

1 Increase as the effective length increases even though its centre of mass still remains at the centre of the bob.
2 Decreases as its effective length increases even through its centre of mass still remains at the centre of the bob.
3 Increases as its effective length increases due to shifting of centre of mass below below centre of the bob
4 Decreases as its effective length increases remains same but centre of the mass shifts above the centre of the bob.
NCERT Exempler
Join With Us for More Updates
PHXI11:THERMAL PROPERTIES OF MATTER

366772 An isosceles triangle is formed with in a rod of length \(l_{1}\) and coefficient of linear expansion \(\alpha_{1}\) as the base and two thin rods each of length \(l_{2}\) and coefficient of linear expansions \(\alpha_{2}\) as the two sides. If the distance between the apex and the midpoint of the base remain unchanged as the temperature is varied, then
supporting img

1 \(\dfrac{l_{1}}{l_{2}}=2 \sqrt{\dfrac{\alpha_{2}}{\alpha_{1}}}\)
2 \(\dfrac{l_{1}}{l_{2}}=\sqrt{\dfrac{\alpha_{2}}{\alpha_{1}}}\)
3 \(\dfrac{l_{1}}{l_{2}}=\dfrac{\alpha_{2}}{\alpha_{1}}\)
4 \(\dfrac{l_{1}}{l_{2}}=\dfrac{2 \alpha_{2}}{\alpha_{1}}\)
PHXI11:THERMAL PROPERTIES OF MATTER

366773 A hole is drilled in a copper sheet. The diameter of the hole is \(4.24\;cm\) at \(27^\circ C\). What is the change in the diameter of the hole when the sheet is heated to \(227^\circ C\) ? Coefficient of linear expansion of copper is \(1.70 \times {10^{ - 5}}/\,^\circ C\).

1 \(1.44 \times {10^{ - 2}}\;cm\)
2 \(2.44 \times {10^{ - 3}}\;cm\)
3 \(1.44 \times {10^{ - 2}}\;mm\)
4 \(2.44 \times {10^{ - 2}}\;mm\)
NCERT Exempler
PHXI11:THERMAL PROPERTIES OF MATTER

366774 A bimetallic strip consists of metals \(X\) and \(Y\). It is mounted rigidly at the base as shown. The metal \(X\) has a higher coefficient of expansion compared to that for metal \(Y\). When bimetallic strip is placed in a hot bath:
supporting img

1 It will bend towards the right
2 It will bend towards the left
3 It will neither bend nor shrink
4 It will not bend but shrink
PHXI11:THERMAL PROPERTIES OF MATTER

366775 As the temperature is increased, the time period of a pendulum.

1 Increase as the effective length increases even though its centre of mass still remains at the centre of the bob.
2 Decreases as its effective length increases even through its centre of mass still remains at the centre of the bob.
3 Increases as its effective length increases due to shifting of centre of mass below below centre of the bob
4 Decreases as its effective length increases remains same but centre of the mass shifts above the centre of the bob.
NCERT Exempler
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here