00. Temperature and Measurement of Temperature (Thermometer)
Thermal Properties of Matter

146415 The temperature of cold, hot junction of a thermocouple are $0^{0} \mathrm{C}$ and $\mathrm{T}^{0} \mathrm{C}$ respectively. The thermo-emf produced is $E=A T-\frac{1}{2} B T^{2}$. If $\mathrm{A}=16, \mathrm{~B}=0.08$, the temperature of inversion will be :

1 $100^{\circ} \mathrm{C}$
2 $300^{\circ} \mathrm{C}$
3 $400^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Thermal Properties of Matter

146416 At what temperature, the hydrogen molecule will escape from earth's surface?

1 $10^{1} \mathrm{~K}$
2 $10^{2} \mathrm{~K}$
3 $10^{3} \mathrm{~K}$
4 $10^{4} \mathrm{~K}$
Thermal Properties of Matter

146417 The temperature of equal masses of three different liquids $A, B$ and $C$ are $12^{\circ} \mathrm{C}, 19^{\circ} \mathrm{C}$ and $28^{\circ} \mathrm{C}$ respectively. The temperature when $A$ and $B$ are mixed is $16^{\circ} \mathrm{C}$ and when $B$ and $C$ are mixed is $23^{\circ} \mathrm{C}$. The temperature when $A$ and $C$ are mixed is

1 $18.2^{\circ} \mathrm{C}$
2 $22^{\circ} \mathrm{C}$
3 $20.2^{\circ} \mathrm{C}$
4 $25.2^{\circ} \mathrm{C}$
Thermal Properties of Matter

146418 Three rods of same dimensional have thermal conductivity $3 K, 2 K$ and $K$, they are arranged as shown in the figure below

Then, the temperature of the junction in steady state is

1 $\frac{200}{3}{ }^{\circ} \mathrm{C}$
2 $\frac{100}{3}{ }^{\circ} \mathrm{C}$
3 $75^{\circ} \mathrm{C}$
4 $\frac{50}{3}{ }^{\circ} \mathrm{C}$
Thermal Properties of Matter

146420 Three rods $X, Y, Z$ of same dimension having thermal conductivities $3 \mathrm{~K}, 2 \mathrm{~K}, \mathrm{~K}$ respectively are arranged as shown in the above figure. Their ends are at $100^{\circ} \mathrm{C}, 60^{\circ} \mathrm{C}$ and $0^{\circ} \mathrm{C}$ respectively. What is the temperature of the junction?

1 $75^{\circ} \mathrm{C}$
2 $72^{\circ} \mathrm{C}$
3 $70^{\circ} \mathrm{C}$
4 $65^{\circ} \mathrm{C}$
Thermal Properties of Matter

146415 The temperature of cold, hot junction of a thermocouple are $0^{0} \mathrm{C}$ and $\mathrm{T}^{0} \mathrm{C}$ respectively. The thermo-emf produced is $E=A T-\frac{1}{2} B T^{2}$. If $\mathrm{A}=16, \mathrm{~B}=0.08$, the temperature of inversion will be :

1 $100^{\circ} \mathrm{C}$
2 $300^{\circ} \mathrm{C}$
3 $400^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Thermal Properties of Matter

146416 At what temperature, the hydrogen molecule will escape from earth's surface?

1 $10^{1} \mathrm{~K}$
2 $10^{2} \mathrm{~K}$
3 $10^{3} \mathrm{~K}$
4 $10^{4} \mathrm{~K}$
Thermal Properties of Matter

146417 The temperature of equal masses of three different liquids $A, B$ and $C$ are $12^{\circ} \mathrm{C}, 19^{\circ} \mathrm{C}$ and $28^{\circ} \mathrm{C}$ respectively. The temperature when $A$ and $B$ are mixed is $16^{\circ} \mathrm{C}$ and when $B$ and $C$ are mixed is $23^{\circ} \mathrm{C}$. The temperature when $A$ and $C$ are mixed is

1 $18.2^{\circ} \mathrm{C}$
2 $22^{\circ} \mathrm{C}$
3 $20.2^{\circ} \mathrm{C}$
4 $25.2^{\circ} \mathrm{C}$
Thermal Properties of Matter

146418 Three rods of same dimensional have thermal conductivity $3 K, 2 K$ and $K$, they are arranged as shown in the figure below

Then, the temperature of the junction in steady state is

1 $\frac{200}{3}{ }^{\circ} \mathrm{C}$
2 $\frac{100}{3}{ }^{\circ} \mathrm{C}$
3 $75^{\circ} \mathrm{C}$
4 $\frac{50}{3}{ }^{\circ} \mathrm{C}$
Thermal Properties of Matter

146420 Three rods $X, Y, Z$ of same dimension having thermal conductivities $3 \mathrm{~K}, 2 \mathrm{~K}, \mathrm{~K}$ respectively are arranged as shown in the above figure. Their ends are at $100^{\circ} \mathrm{C}, 60^{\circ} \mathrm{C}$ and $0^{\circ} \mathrm{C}$ respectively. What is the temperature of the junction?

1 $75^{\circ} \mathrm{C}$
2 $72^{\circ} \mathrm{C}$
3 $70^{\circ} \mathrm{C}$
4 $65^{\circ} \mathrm{C}$
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Thermal Properties of Matter

146415 The temperature of cold, hot junction of a thermocouple are $0^{0} \mathrm{C}$ and $\mathrm{T}^{0} \mathrm{C}$ respectively. The thermo-emf produced is $E=A T-\frac{1}{2} B T^{2}$. If $\mathrm{A}=16, \mathrm{~B}=0.08$, the temperature of inversion will be :

1 $100^{\circ} \mathrm{C}$
2 $300^{\circ} \mathrm{C}$
3 $400^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Thermal Properties of Matter

146416 At what temperature, the hydrogen molecule will escape from earth's surface?

1 $10^{1} \mathrm{~K}$
2 $10^{2} \mathrm{~K}$
3 $10^{3} \mathrm{~K}$
4 $10^{4} \mathrm{~K}$
Thermal Properties of Matter

146417 The temperature of equal masses of three different liquids $A, B$ and $C$ are $12^{\circ} \mathrm{C}, 19^{\circ} \mathrm{C}$ and $28^{\circ} \mathrm{C}$ respectively. The temperature when $A$ and $B$ are mixed is $16^{\circ} \mathrm{C}$ and when $B$ and $C$ are mixed is $23^{\circ} \mathrm{C}$. The temperature when $A$ and $C$ are mixed is

1 $18.2^{\circ} \mathrm{C}$
2 $22^{\circ} \mathrm{C}$
3 $20.2^{\circ} \mathrm{C}$
4 $25.2^{\circ} \mathrm{C}$
Thermal Properties of Matter

146418 Three rods of same dimensional have thermal conductivity $3 K, 2 K$ and $K$, they are arranged as shown in the figure below

Then, the temperature of the junction in steady state is

1 $\frac{200}{3}{ }^{\circ} \mathrm{C}$
2 $\frac{100}{3}{ }^{\circ} \mathrm{C}$
3 $75^{\circ} \mathrm{C}$
4 $\frac{50}{3}{ }^{\circ} \mathrm{C}$
Thermal Properties of Matter

146420 Three rods $X, Y, Z$ of same dimension having thermal conductivities $3 \mathrm{~K}, 2 \mathrm{~K}, \mathrm{~K}$ respectively are arranged as shown in the above figure. Their ends are at $100^{\circ} \mathrm{C}, 60^{\circ} \mathrm{C}$ and $0^{\circ} \mathrm{C}$ respectively. What is the temperature of the junction?

1 $75^{\circ} \mathrm{C}$
2 $72^{\circ} \mathrm{C}$
3 $70^{\circ} \mathrm{C}$
4 $65^{\circ} \mathrm{C}$
Thermal Properties of Matter

146415 The temperature of cold, hot junction of a thermocouple are $0^{0} \mathrm{C}$ and $\mathrm{T}^{0} \mathrm{C}$ respectively. The thermo-emf produced is $E=A T-\frac{1}{2} B T^{2}$. If $\mathrm{A}=16, \mathrm{~B}=0.08$, the temperature of inversion will be :

1 $100^{\circ} \mathrm{C}$
2 $300^{\circ} \mathrm{C}$
3 $400^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Thermal Properties of Matter

146416 At what temperature, the hydrogen molecule will escape from earth's surface?

1 $10^{1} \mathrm{~K}$
2 $10^{2} \mathrm{~K}$
3 $10^{3} \mathrm{~K}$
4 $10^{4} \mathrm{~K}$
Thermal Properties of Matter

146417 The temperature of equal masses of three different liquids $A, B$ and $C$ are $12^{\circ} \mathrm{C}, 19^{\circ} \mathrm{C}$ and $28^{\circ} \mathrm{C}$ respectively. The temperature when $A$ and $B$ are mixed is $16^{\circ} \mathrm{C}$ and when $B$ and $C$ are mixed is $23^{\circ} \mathrm{C}$. The temperature when $A$ and $C$ are mixed is

1 $18.2^{\circ} \mathrm{C}$
2 $22^{\circ} \mathrm{C}$
3 $20.2^{\circ} \mathrm{C}$
4 $25.2^{\circ} \mathrm{C}$
Thermal Properties of Matter

146418 Three rods of same dimensional have thermal conductivity $3 K, 2 K$ and $K$, they are arranged as shown in the figure below

Then, the temperature of the junction in steady state is

1 $\frac{200}{3}{ }^{\circ} \mathrm{C}$
2 $\frac{100}{3}{ }^{\circ} \mathrm{C}$
3 $75^{\circ} \mathrm{C}$
4 $\frac{50}{3}{ }^{\circ} \mathrm{C}$
Thermal Properties of Matter

146420 Three rods $X, Y, Z$ of same dimension having thermal conductivities $3 \mathrm{~K}, 2 \mathrm{~K}, \mathrm{~K}$ respectively are arranged as shown in the above figure. Their ends are at $100^{\circ} \mathrm{C}, 60^{\circ} \mathrm{C}$ and $0^{\circ} \mathrm{C}$ respectively. What is the temperature of the junction?

1 $75^{\circ} \mathrm{C}$
2 $72^{\circ} \mathrm{C}$
3 $70^{\circ} \mathrm{C}$
4 $65^{\circ} \mathrm{C}$
Thermal Properties of Matter

146415 The temperature of cold, hot junction of a thermocouple are $0^{0} \mathrm{C}$ and $\mathrm{T}^{0} \mathrm{C}$ respectively. The thermo-emf produced is $E=A T-\frac{1}{2} B T^{2}$. If $\mathrm{A}=16, \mathrm{~B}=0.08$, the temperature of inversion will be :

1 $100^{\circ} \mathrm{C}$
2 $300^{\circ} \mathrm{C}$
3 $400^{\circ} \mathrm{C}$
4 $500^{\circ} \mathrm{C}$
Thermal Properties of Matter

146416 At what temperature, the hydrogen molecule will escape from earth's surface?

1 $10^{1} \mathrm{~K}$
2 $10^{2} \mathrm{~K}$
3 $10^{3} \mathrm{~K}$
4 $10^{4} \mathrm{~K}$
Thermal Properties of Matter

146417 The temperature of equal masses of three different liquids $A, B$ and $C$ are $12^{\circ} \mathrm{C}, 19^{\circ} \mathrm{C}$ and $28^{\circ} \mathrm{C}$ respectively. The temperature when $A$ and $B$ are mixed is $16^{\circ} \mathrm{C}$ and when $B$ and $C$ are mixed is $23^{\circ} \mathrm{C}$. The temperature when $A$ and $C$ are mixed is

1 $18.2^{\circ} \mathrm{C}$
2 $22^{\circ} \mathrm{C}$
3 $20.2^{\circ} \mathrm{C}$
4 $25.2^{\circ} \mathrm{C}$
Thermal Properties of Matter

146418 Three rods of same dimensional have thermal conductivity $3 K, 2 K$ and $K$, they are arranged as shown in the figure below

Then, the temperature of the junction in steady state is

1 $\frac{200}{3}{ }^{\circ} \mathrm{C}$
2 $\frac{100}{3}{ }^{\circ} \mathrm{C}$
3 $75^{\circ} \mathrm{C}$
4 $\frac{50}{3}{ }^{\circ} \mathrm{C}$
Thermal Properties of Matter

146420 Three rods $X, Y, Z$ of same dimension having thermal conductivities $3 \mathrm{~K}, 2 \mathrm{~K}, \mathrm{~K}$ respectively are arranged as shown in the above figure. Their ends are at $100^{\circ} \mathrm{C}, 60^{\circ} \mathrm{C}$ and $0^{\circ} \mathrm{C}$ respectively. What is the temperature of the junction?

1 $75^{\circ} \mathrm{C}$
2 $72^{\circ} \mathrm{C}$
3 $70^{\circ} \mathrm{C}$
4 $65^{\circ} \mathrm{C}$