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

146427 A bucket full of hot water is kept in a room. It cools from $75^{\circ} \mathrm{C}$ to $70^{\circ} \mathrm{C}$ in $\mathrm{t}_{1}$ minutes, from $70^{\circ} \mathrm{C}$ to $65^{\circ} \mathrm{C}$ in $\mathrm{t}_{2}$ minutes and from $65^{\circ} \mathrm{C}$ to $60^{\circ} \mathrm{C}$ in $\mathbf{t}_{3}$ minutes. Then :

1 $t_{1} \lt t_{2} \lt t_{3}$
2 $t_{1}=t_{2}=t_{3}$
3 $t_{1} \lt t_{2}>t_{3}$
4 $t_{1}>t_{2}>t_{3}$
Karnataka CET-2003
Thermal Properties of Matter

146428 The readings of a constant volume gas thermometer at $0^{\circ} \mathrm{C}$ and $100^{\circ} \mathrm{C}$ are $40 \mathrm{~cm}$ of mercury and $60 \mathrm{~cm}$ of mercury. If its reading at an unknown temperature is $100 \mathrm{~cm}$ of mercury column, then the temperature is :

1 $100^{\circ} \mathrm{C}$
2 $50^{\circ} \mathrm{C}$
3 $25^{\circ} \mathrm{C}$
4 $300^{\circ} \mathrm{C}$
5 None of these
KERALA CEE 2006
Thermal Properties of Matter

146429 Same quantity of ice is filled in each of the two metal containers $P$ and $Q$ having the same size, shape and wall thickness but made of different materials. The containers are kept in identical surroundings. The ice in $P$ metals completely in time $t_{1}$ whereas in $Q$ takes a time $t_{2}$. The ratio of thermal conductivities of the materials of $P$ and $Q$ is

1 $t_{2}: t_{1}$
2 $\mathrm{t}_{1}: \mathrm{t}_{2}$
3 $\mathrm{t}_{1}^{2}: \mathrm{t}_{2}^{2}$
4 $\mathrm{t}_{2}^{2}: \mathrm{t}_{1}^{2}$
Thermal Properties of Matter

146430 Three bodies of the same material and having masses $\mathrm{m}, \mathrm{m}$ and $3 \mathrm{~m}$ are at temperatures $40^{\circ} \mathrm{C}, 50^{\circ} \mathrm{C}$ and $60^{\circ} \mathrm{C}$, respectively. If the bodies are brought in thermal contact, the final temperature will be

1 $45^{\circ} \mathrm{C}$
2 $54^{\circ} \mathrm{C}$
3 $52^{\circ} \mathrm{C}$
4 $48^{\circ} \mathrm{C}$
WB JEE 2015
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Thermal Properties of Matter

146427 A bucket full of hot water is kept in a room. It cools from $75^{\circ} \mathrm{C}$ to $70^{\circ} \mathrm{C}$ in $\mathrm{t}_{1}$ minutes, from $70^{\circ} \mathrm{C}$ to $65^{\circ} \mathrm{C}$ in $\mathrm{t}_{2}$ minutes and from $65^{\circ} \mathrm{C}$ to $60^{\circ} \mathrm{C}$ in $\mathbf{t}_{3}$ minutes. Then :

1 $t_{1} \lt t_{2} \lt t_{3}$
2 $t_{1}=t_{2}=t_{3}$
3 $t_{1} \lt t_{2}>t_{3}$
4 $t_{1}>t_{2}>t_{3}$
Karnataka CET-2003
Thermal Properties of Matter

146428 The readings of a constant volume gas thermometer at $0^{\circ} \mathrm{C}$ and $100^{\circ} \mathrm{C}$ are $40 \mathrm{~cm}$ of mercury and $60 \mathrm{~cm}$ of mercury. If its reading at an unknown temperature is $100 \mathrm{~cm}$ of mercury column, then the temperature is :

1 $100^{\circ} \mathrm{C}$
2 $50^{\circ} \mathrm{C}$
3 $25^{\circ} \mathrm{C}$
4 $300^{\circ} \mathrm{C}$
5 None of these
KERALA CEE 2006
Thermal Properties of Matter

146429 Same quantity of ice is filled in each of the two metal containers $P$ and $Q$ having the same size, shape and wall thickness but made of different materials. The containers are kept in identical surroundings. The ice in $P$ metals completely in time $t_{1}$ whereas in $Q$ takes a time $t_{2}$. The ratio of thermal conductivities of the materials of $P$ and $Q$ is

1 $t_{2}: t_{1}$
2 $\mathrm{t}_{1}: \mathrm{t}_{2}$
3 $\mathrm{t}_{1}^{2}: \mathrm{t}_{2}^{2}$
4 $\mathrm{t}_{2}^{2}: \mathrm{t}_{1}^{2}$
Thermal Properties of Matter

146430 Three bodies of the same material and having masses $\mathrm{m}, \mathrm{m}$ and $3 \mathrm{~m}$ are at temperatures $40^{\circ} \mathrm{C}, 50^{\circ} \mathrm{C}$ and $60^{\circ} \mathrm{C}$, respectively. If the bodies are brought in thermal contact, the final temperature will be

1 $45^{\circ} \mathrm{C}$
2 $54^{\circ} \mathrm{C}$
3 $52^{\circ} \mathrm{C}$
4 $48^{\circ} \mathrm{C}$
WB JEE 2015
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Thermal Properties of Matter

146427 A bucket full of hot water is kept in a room. It cools from $75^{\circ} \mathrm{C}$ to $70^{\circ} \mathrm{C}$ in $\mathrm{t}_{1}$ minutes, from $70^{\circ} \mathrm{C}$ to $65^{\circ} \mathrm{C}$ in $\mathrm{t}_{2}$ minutes and from $65^{\circ} \mathrm{C}$ to $60^{\circ} \mathrm{C}$ in $\mathbf{t}_{3}$ minutes. Then :

1 $t_{1} \lt t_{2} \lt t_{3}$
2 $t_{1}=t_{2}=t_{3}$
3 $t_{1} \lt t_{2}>t_{3}$
4 $t_{1}>t_{2}>t_{3}$
Karnataka CET-2003
Thermal Properties of Matter

146428 The readings of a constant volume gas thermometer at $0^{\circ} \mathrm{C}$ and $100^{\circ} \mathrm{C}$ are $40 \mathrm{~cm}$ of mercury and $60 \mathrm{~cm}$ of mercury. If its reading at an unknown temperature is $100 \mathrm{~cm}$ of mercury column, then the temperature is :

1 $100^{\circ} \mathrm{C}$
2 $50^{\circ} \mathrm{C}$
3 $25^{\circ} \mathrm{C}$
4 $300^{\circ} \mathrm{C}$
5 None of these
KERALA CEE 2006
Thermal Properties of Matter

146429 Same quantity of ice is filled in each of the two metal containers $P$ and $Q$ having the same size, shape and wall thickness but made of different materials. The containers are kept in identical surroundings. The ice in $P$ metals completely in time $t_{1}$ whereas in $Q$ takes a time $t_{2}$. The ratio of thermal conductivities of the materials of $P$ and $Q$ is

1 $t_{2}: t_{1}$
2 $\mathrm{t}_{1}: \mathrm{t}_{2}$
3 $\mathrm{t}_{1}^{2}: \mathrm{t}_{2}^{2}$
4 $\mathrm{t}_{2}^{2}: \mathrm{t}_{1}^{2}$
Thermal Properties of Matter

146430 Three bodies of the same material and having masses $\mathrm{m}, \mathrm{m}$ and $3 \mathrm{~m}$ are at temperatures $40^{\circ} \mathrm{C}, 50^{\circ} \mathrm{C}$ and $60^{\circ} \mathrm{C}$, respectively. If the bodies are brought in thermal contact, the final temperature will be

1 $45^{\circ} \mathrm{C}$
2 $54^{\circ} \mathrm{C}$
3 $52^{\circ} \mathrm{C}$
4 $48^{\circ} \mathrm{C}$
WB JEE 2015
NEET DIGITAL LIBRARY
Thermal Properties of Matter

146427 A bucket full of hot water is kept in a room. It cools from $75^{\circ} \mathrm{C}$ to $70^{\circ} \mathrm{C}$ in $\mathrm{t}_{1}$ minutes, from $70^{\circ} \mathrm{C}$ to $65^{\circ} \mathrm{C}$ in $\mathrm{t}_{2}$ minutes and from $65^{\circ} \mathrm{C}$ to $60^{\circ} \mathrm{C}$ in $\mathbf{t}_{3}$ minutes. Then :

1 $t_{1} \lt t_{2} \lt t_{3}$
2 $t_{1}=t_{2}=t_{3}$
3 $t_{1} \lt t_{2}>t_{3}$
4 $t_{1}>t_{2}>t_{3}$
Karnataka CET-2003
Thermal Properties of Matter

146428 The readings of a constant volume gas thermometer at $0^{\circ} \mathrm{C}$ and $100^{\circ} \mathrm{C}$ are $40 \mathrm{~cm}$ of mercury and $60 \mathrm{~cm}$ of mercury. If its reading at an unknown temperature is $100 \mathrm{~cm}$ of mercury column, then the temperature is :

1 $100^{\circ} \mathrm{C}$
2 $50^{\circ} \mathrm{C}$
3 $25^{\circ} \mathrm{C}$
4 $300^{\circ} \mathrm{C}$
5 None of these
KERALA CEE 2006
Thermal Properties of Matter

146429 Same quantity of ice is filled in each of the two metal containers $P$ and $Q$ having the same size, shape and wall thickness but made of different materials. The containers are kept in identical surroundings. The ice in $P$ metals completely in time $t_{1}$ whereas in $Q$ takes a time $t_{2}$. The ratio of thermal conductivities of the materials of $P$ and $Q$ is

1 $t_{2}: t_{1}$
2 $\mathrm{t}_{1}: \mathrm{t}_{2}$
3 $\mathrm{t}_{1}^{2}: \mathrm{t}_{2}^{2}$
4 $\mathrm{t}_{2}^{2}: \mathrm{t}_{1}^{2}$
Thermal Properties of Matter

146430 Three bodies of the same material and having masses $\mathrm{m}, \mathrm{m}$ and $3 \mathrm{~m}$ are at temperatures $40^{\circ} \mathrm{C}, 50^{\circ} \mathrm{C}$ and $60^{\circ} \mathrm{C}$, respectively. If the bodies are brought in thermal contact, the final temperature will be

1 $45^{\circ} \mathrm{C}$
2 $54^{\circ} \mathrm{C}$
3 $52^{\circ} \mathrm{C}$
4 $48^{\circ} \mathrm{C}$
WB JEE 2015
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