146552
If the coefficient of cubical expansion is ' $X$ ' times of the coefficient of superfacial expansion, then value of ' $X$ ' is
1 $1 / 2$
2 1
3 1.5
4 4
Explanation:
C Let, the coefficient of cubical expansion and surface expansion are denoted by $\gamma$ and $\beta$ respectively. We know that $\alpha: \beta: \gamma=1: 2: 3$ $\frac{\gamma}{3}=\frac{\beta}{2}$ $\gamma=\frac{3}{2} \beta$ So, We get $\mathrm{X}=1.5$
SRM JEE-2018 JCECE-2003
Thermal Properties of Matter
146610
Peltier effect is the converse of:
1 Thomson effect
2 Fleming's left hand rule
3 Lenz's law
4 Seebeck effect
Explanation:
D Peltier effect is the converse of Seebeck effect. Peltier Effect:- It states that, If an emf is applied in a thermo couple formed of two different metals, then one junction is heated and other is cold.
AP EAMCET(Medical)-2001
Thermal Properties of Matter
146625
Metal pipes used to carry water sometimes burst in the winter. This is because :
1 water expands when it freezes
2 metal contracts more than water
3 outside of the pipe contracts more than inside
4 metal expands more than water
Explanation:
A Metal pipe used to carry water sometimes burst in the winter because water expands when it freeze. This expansion allows water molecules to maximize the number of hydrogen bonds which exist between them.
NDA (II) 2010**
Thermal Properties of Matter
146627
Which one of the following statements with regard to expansion of materials due to heating is not correct?
1 As ice melts, it expands uniformly up to $4^{\circ} \mathrm{C}$
2 Mercury thermometer works using the principal of expansion due to heating.
3 Small gap is kept between two rails to allow for expansion due to heating.
4 The length of metallic wire increases when its temperature is increased
Explanation:
A When ice melts it contracts up to $4^{\circ} \mathrm{C}$, after that it starts to expand because ice occupies more volume than water having same mass. At $4^{\circ} \mathrm{C}$, the density of the water increases first and then decreases. It does not increase uniformly. - Mercury thermometer works using the principal of expansion due to hearting because in case of mercury thermometer, the heat from the body of man is given to the mercury which expands in thermometer and shows the respective temperature reading. - Small gap is kept between two rails to allow for expansion due to heating because gap left between them is filled by the expanded rail in the summer days due to temperature increment in the material of rail.
NDA (I) 2016
Thermal Properties of Matter
146628
Thermal capacity of a body depends on the
1 mass of the body only
2 mass and shape of the body only
3 density of the body
4 mass, shape and temperature of the body
Explanation:
A The thermal capacity of the body is heat necessary to raise the temperature of the body by one degree. Thermal capacity $=$ Mass of body $\times$ Specific heat Thus, thermal capacity of a body depends on the mass of the body only.
146552
If the coefficient of cubical expansion is ' $X$ ' times of the coefficient of superfacial expansion, then value of ' $X$ ' is
1 $1 / 2$
2 1
3 1.5
4 4
Explanation:
C Let, the coefficient of cubical expansion and surface expansion are denoted by $\gamma$ and $\beta$ respectively. We know that $\alpha: \beta: \gamma=1: 2: 3$ $\frac{\gamma}{3}=\frac{\beta}{2}$ $\gamma=\frac{3}{2} \beta$ So, We get $\mathrm{X}=1.5$
SRM JEE-2018 JCECE-2003
Thermal Properties of Matter
146610
Peltier effect is the converse of:
1 Thomson effect
2 Fleming's left hand rule
3 Lenz's law
4 Seebeck effect
Explanation:
D Peltier effect is the converse of Seebeck effect. Peltier Effect:- It states that, If an emf is applied in a thermo couple formed of two different metals, then one junction is heated and other is cold.
AP EAMCET(Medical)-2001
Thermal Properties of Matter
146625
Metal pipes used to carry water sometimes burst in the winter. This is because :
1 water expands when it freezes
2 metal contracts more than water
3 outside of the pipe contracts more than inside
4 metal expands more than water
Explanation:
A Metal pipe used to carry water sometimes burst in the winter because water expands when it freeze. This expansion allows water molecules to maximize the number of hydrogen bonds which exist between them.
NDA (II) 2010**
Thermal Properties of Matter
146627
Which one of the following statements with regard to expansion of materials due to heating is not correct?
1 As ice melts, it expands uniformly up to $4^{\circ} \mathrm{C}$
2 Mercury thermometer works using the principal of expansion due to heating.
3 Small gap is kept between two rails to allow for expansion due to heating.
4 The length of metallic wire increases when its temperature is increased
Explanation:
A When ice melts it contracts up to $4^{\circ} \mathrm{C}$, after that it starts to expand because ice occupies more volume than water having same mass. At $4^{\circ} \mathrm{C}$, the density of the water increases first and then decreases. It does not increase uniformly. - Mercury thermometer works using the principal of expansion due to hearting because in case of mercury thermometer, the heat from the body of man is given to the mercury which expands in thermometer and shows the respective temperature reading. - Small gap is kept between two rails to allow for expansion due to heating because gap left between them is filled by the expanded rail in the summer days due to temperature increment in the material of rail.
NDA (I) 2016
Thermal Properties of Matter
146628
Thermal capacity of a body depends on the
1 mass of the body only
2 mass and shape of the body only
3 density of the body
4 mass, shape and temperature of the body
Explanation:
A The thermal capacity of the body is heat necessary to raise the temperature of the body by one degree. Thermal capacity $=$ Mass of body $\times$ Specific heat Thus, thermal capacity of a body depends on the mass of the body only.
146552
If the coefficient of cubical expansion is ' $X$ ' times of the coefficient of superfacial expansion, then value of ' $X$ ' is
1 $1 / 2$
2 1
3 1.5
4 4
Explanation:
C Let, the coefficient of cubical expansion and surface expansion are denoted by $\gamma$ and $\beta$ respectively. We know that $\alpha: \beta: \gamma=1: 2: 3$ $\frac{\gamma}{3}=\frac{\beta}{2}$ $\gamma=\frac{3}{2} \beta$ So, We get $\mathrm{X}=1.5$
SRM JEE-2018 JCECE-2003
Thermal Properties of Matter
146610
Peltier effect is the converse of:
1 Thomson effect
2 Fleming's left hand rule
3 Lenz's law
4 Seebeck effect
Explanation:
D Peltier effect is the converse of Seebeck effect. Peltier Effect:- It states that, If an emf is applied in a thermo couple formed of two different metals, then one junction is heated and other is cold.
AP EAMCET(Medical)-2001
Thermal Properties of Matter
146625
Metal pipes used to carry water sometimes burst in the winter. This is because :
1 water expands when it freezes
2 metal contracts more than water
3 outside of the pipe contracts more than inside
4 metal expands more than water
Explanation:
A Metal pipe used to carry water sometimes burst in the winter because water expands when it freeze. This expansion allows water molecules to maximize the number of hydrogen bonds which exist between them.
NDA (II) 2010**
Thermal Properties of Matter
146627
Which one of the following statements with regard to expansion of materials due to heating is not correct?
1 As ice melts, it expands uniformly up to $4^{\circ} \mathrm{C}$
2 Mercury thermometer works using the principal of expansion due to heating.
3 Small gap is kept between two rails to allow for expansion due to heating.
4 The length of metallic wire increases when its temperature is increased
Explanation:
A When ice melts it contracts up to $4^{\circ} \mathrm{C}$, after that it starts to expand because ice occupies more volume than water having same mass. At $4^{\circ} \mathrm{C}$, the density of the water increases first and then decreases. It does not increase uniformly. - Mercury thermometer works using the principal of expansion due to hearting because in case of mercury thermometer, the heat from the body of man is given to the mercury which expands in thermometer and shows the respective temperature reading. - Small gap is kept between two rails to allow for expansion due to heating because gap left between them is filled by the expanded rail in the summer days due to temperature increment in the material of rail.
NDA (I) 2016
Thermal Properties of Matter
146628
Thermal capacity of a body depends on the
1 mass of the body only
2 mass and shape of the body only
3 density of the body
4 mass, shape and temperature of the body
Explanation:
A The thermal capacity of the body is heat necessary to raise the temperature of the body by one degree. Thermal capacity $=$ Mass of body $\times$ Specific heat Thus, thermal capacity of a body depends on the mass of the body only.
146552
If the coefficient of cubical expansion is ' $X$ ' times of the coefficient of superfacial expansion, then value of ' $X$ ' is
1 $1 / 2$
2 1
3 1.5
4 4
Explanation:
C Let, the coefficient of cubical expansion and surface expansion are denoted by $\gamma$ and $\beta$ respectively. We know that $\alpha: \beta: \gamma=1: 2: 3$ $\frac{\gamma}{3}=\frac{\beta}{2}$ $\gamma=\frac{3}{2} \beta$ So, We get $\mathrm{X}=1.5$
SRM JEE-2018 JCECE-2003
Thermal Properties of Matter
146610
Peltier effect is the converse of:
1 Thomson effect
2 Fleming's left hand rule
3 Lenz's law
4 Seebeck effect
Explanation:
D Peltier effect is the converse of Seebeck effect. Peltier Effect:- It states that, If an emf is applied in a thermo couple formed of two different metals, then one junction is heated and other is cold.
AP EAMCET(Medical)-2001
Thermal Properties of Matter
146625
Metal pipes used to carry water sometimes burst in the winter. This is because :
1 water expands when it freezes
2 metal contracts more than water
3 outside of the pipe contracts more than inside
4 metal expands more than water
Explanation:
A Metal pipe used to carry water sometimes burst in the winter because water expands when it freeze. This expansion allows water molecules to maximize the number of hydrogen bonds which exist between them.
NDA (II) 2010**
Thermal Properties of Matter
146627
Which one of the following statements with regard to expansion of materials due to heating is not correct?
1 As ice melts, it expands uniformly up to $4^{\circ} \mathrm{C}$
2 Mercury thermometer works using the principal of expansion due to heating.
3 Small gap is kept between two rails to allow for expansion due to heating.
4 The length of metallic wire increases when its temperature is increased
Explanation:
A When ice melts it contracts up to $4^{\circ} \mathrm{C}$, after that it starts to expand because ice occupies more volume than water having same mass. At $4^{\circ} \mathrm{C}$, the density of the water increases first and then decreases. It does not increase uniformly. - Mercury thermometer works using the principal of expansion due to hearting because in case of mercury thermometer, the heat from the body of man is given to the mercury which expands in thermometer and shows the respective temperature reading. - Small gap is kept between two rails to allow for expansion due to heating because gap left between them is filled by the expanded rail in the summer days due to temperature increment in the material of rail.
NDA (I) 2016
Thermal Properties of Matter
146628
Thermal capacity of a body depends on the
1 mass of the body only
2 mass and shape of the body only
3 density of the body
4 mass, shape and temperature of the body
Explanation:
A The thermal capacity of the body is heat necessary to raise the temperature of the body by one degree. Thermal capacity $=$ Mass of body $\times$ Specific heat Thus, thermal capacity of a body depends on the mass of the body only.
146552
If the coefficient of cubical expansion is ' $X$ ' times of the coefficient of superfacial expansion, then value of ' $X$ ' is
1 $1 / 2$
2 1
3 1.5
4 4
Explanation:
C Let, the coefficient of cubical expansion and surface expansion are denoted by $\gamma$ and $\beta$ respectively. We know that $\alpha: \beta: \gamma=1: 2: 3$ $\frac{\gamma}{3}=\frac{\beta}{2}$ $\gamma=\frac{3}{2} \beta$ So, We get $\mathrm{X}=1.5$
SRM JEE-2018 JCECE-2003
Thermal Properties of Matter
146610
Peltier effect is the converse of:
1 Thomson effect
2 Fleming's left hand rule
3 Lenz's law
4 Seebeck effect
Explanation:
D Peltier effect is the converse of Seebeck effect. Peltier Effect:- It states that, If an emf is applied in a thermo couple formed of two different metals, then one junction is heated and other is cold.
AP EAMCET(Medical)-2001
Thermal Properties of Matter
146625
Metal pipes used to carry water sometimes burst in the winter. This is because :
1 water expands when it freezes
2 metal contracts more than water
3 outside of the pipe contracts more than inside
4 metal expands more than water
Explanation:
A Metal pipe used to carry water sometimes burst in the winter because water expands when it freeze. This expansion allows water molecules to maximize the number of hydrogen bonds which exist between them.
NDA (II) 2010**
Thermal Properties of Matter
146627
Which one of the following statements with regard to expansion of materials due to heating is not correct?
1 As ice melts, it expands uniformly up to $4^{\circ} \mathrm{C}$
2 Mercury thermometer works using the principal of expansion due to heating.
3 Small gap is kept between two rails to allow for expansion due to heating.
4 The length of metallic wire increases when its temperature is increased
Explanation:
A When ice melts it contracts up to $4^{\circ} \mathrm{C}$, after that it starts to expand because ice occupies more volume than water having same mass. At $4^{\circ} \mathrm{C}$, the density of the water increases first and then decreases. It does not increase uniformly. - Mercury thermometer works using the principal of expansion due to hearting because in case of mercury thermometer, the heat from the body of man is given to the mercury which expands in thermometer and shows the respective temperature reading. - Small gap is kept between two rails to allow for expansion due to heating because gap left between them is filled by the expanded rail in the summer days due to temperature increment in the material of rail.
NDA (I) 2016
Thermal Properties of Matter
146628
Thermal capacity of a body depends on the
1 mass of the body only
2 mass and shape of the body only
3 density of the body
4 mass, shape and temperature of the body
Explanation:
A The thermal capacity of the body is heat necessary to raise the temperature of the body by one degree. Thermal capacity $=$ Mass of body $\times$ Specific heat Thus, thermal capacity of a body depends on the mass of the body only.
