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

146437 Statement (I) : Gas thermometers are less sensitive than liquid thermometers.
Statement (II) : The ratio of universal gas constant and Avagadro's number is called Boltzman's constant.
Statement (III) : The density of a given mass of a gas at constant pressure is inversely proportional to its absolute temperature.
The correct option among the following is

1 Statements I, II, III are true.
2 Statements I, II are true, but statement III is false.
3 Statements II, III are true, but statement I is false.
4 Statements I, II, III are false.
Thermal Properties of Matter

146438 An air conditioner (AC) removes heat rate of $1.2 \mathrm{~kJ} / \mathrm{sec}$ from a room. A power of $400 \mathrm{~W}$ is required to run the $A C$. The coefficient of performance $(\alpha)$ of the $\mathrm{AC}$ is $10 \%$ of that of the refrigerator operating between outside and room temperature. If outside temperature is $37^{\circ} \mathrm{C}$, what will be room temperature ?

1 $31^{\circ} \mathrm{C}$
2 $27^{\circ} \mathrm{C}$
3 $24^{\circ} \mathrm{C}$
4 $25^{\circ} \mathrm{C}$
Thermal Properties of Matter

146439 In a room where the temperature is $30^{\circ} \mathrm{C}$ a body cools from $61^{\circ} \mathrm{C}$ to $59^{\circ} \mathrm{C}$ in 4 minutes. The time taken by the body to cool from $51^{\circ} \mathrm{C}$ to $49^{\circ} \mathrm{C}$ will be:

1 $4 \mathrm{~min}$
2 $5 \mathrm{~min}$
3 $6 \mathrm{~min}$
4 $8 \mathrm{~min}$
Thermal Properties of Matter

146440 Two similar heater coils separately take 10 minutes to boil a certain amount of water. If both coils are connected in series, time taken to boil the same amount of water will be

1 15 minutes
2 20 minutes
3 7.5 minutes
4 25 minutes
Thermal Properties of Matter

146441 The end $A$ of $\operatorname{rod} A B$ is length $1 \mathrm{~m}$ is maintained at $100^{\circ} \mathrm{C}$ and the end $B$ at $10^{\circ} \mathrm{C}$. The temperature at a distance of $60 \mathrm{~cm}$ from the end $B$ is

1 $64^{\circ} \mathrm{C}$
2 $36^{\circ} \mathrm{C}$
3 $46^{\circ} \mathrm{C}$
4 $72^{\circ} \mathrm{C}$
Thermal Properties of Matter

146437 Statement (I) : Gas thermometers are less sensitive than liquid thermometers.
Statement (II) : The ratio of universal gas constant and Avagadro's number is called Boltzman's constant.
Statement (III) : The density of a given mass of a gas at constant pressure is inversely proportional to its absolute temperature.
The correct option among the following is

1 Statements I, II, III are true.
2 Statements I, II are true, but statement III is false.
3 Statements II, III are true, but statement I is false.
4 Statements I, II, III are false.
Thermal Properties of Matter

146438 An air conditioner (AC) removes heat rate of $1.2 \mathrm{~kJ} / \mathrm{sec}$ from a room. A power of $400 \mathrm{~W}$ is required to run the $A C$. The coefficient of performance $(\alpha)$ of the $\mathrm{AC}$ is $10 \%$ of that of the refrigerator operating between outside and room temperature. If outside temperature is $37^{\circ} \mathrm{C}$, what will be room temperature ?

1 $31^{\circ} \mathrm{C}$
2 $27^{\circ} \mathrm{C}$
3 $24^{\circ} \mathrm{C}$
4 $25^{\circ} \mathrm{C}$
Thermal Properties of Matter

146439 In a room where the temperature is $30^{\circ} \mathrm{C}$ a body cools from $61^{\circ} \mathrm{C}$ to $59^{\circ} \mathrm{C}$ in 4 minutes. The time taken by the body to cool from $51^{\circ} \mathrm{C}$ to $49^{\circ} \mathrm{C}$ will be:

1 $4 \mathrm{~min}$
2 $5 \mathrm{~min}$
3 $6 \mathrm{~min}$
4 $8 \mathrm{~min}$
Thermal Properties of Matter

146440 Two similar heater coils separately take 10 minutes to boil a certain amount of water. If both coils are connected in series, time taken to boil the same amount of water will be

1 15 minutes
2 20 minutes
3 7.5 minutes
4 25 minutes
Thermal Properties of Matter

146441 The end $A$ of $\operatorname{rod} A B$ is length $1 \mathrm{~m}$ is maintained at $100^{\circ} \mathrm{C}$ and the end $B$ at $10^{\circ} \mathrm{C}$. The temperature at a distance of $60 \mathrm{~cm}$ from the end $B$ is

1 $64^{\circ} \mathrm{C}$
2 $36^{\circ} \mathrm{C}$
3 $46^{\circ} \mathrm{C}$
4 $72^{\circ} \mathrm{C}$
Thermal Properties of Matter

146437 Statement (I) : Gas thermometers are less sensitive than liquid thermometers.
Statement (II) : The ratio of universal gas constant and Avagadro's number is called Boltzman's constant.
Statement (III) : The density of a given mass of a gas at constant pressure is inversely proportional to its absolute temperature.
The correct option among the following is

1 Statements I, II, III are true.
2 Statements I, II are true, but statement III is false.
3 Statements II, III are true, but statement I is false.
4 Statements I, II, III are false.
Thermal Properties of Matter

146438 An air conditioner (AC) removes heat rate of $1.2 \mathrm{~kJ} / \mathrm{sec}$ from a room. A power of $400 \mathrm{~W}$ is required to run the $A C$. The coefficient of performance $(\alpha)$ of the $\mathrm{AC}$ is $10 \%$ of that of the refrigerator operating between outside and room temperature. If outside temperature is $37^{\circ} \mathrm{C}$, what will be room temperature ?

1 $31^{\circ} \mathrm{C}$
2 $27^{\circ} \mathrm{C}$
3 $24^{\circ} \mathrm{C}$
4 $25^{\circ} \mathrm{C}$
Thermal Properties of Matter

146439 In a room where the temperature is $30^{\circ} \mathrm{C}$ a body cools from $61^{\circ} \mathrm{C}$ to $59^{\circ} \mathrm{C}$ in 4 minutes. The time taken by the body to cool from $51^{\circ} \mathrm{C}$ to $49^{\circ} \mathrm{C}$ will be:

1 $4 \mathrm{~min}$
2 $5 \mathrm{~min}$
3 $6 \mathrm{~min}$
4 $8 \mathrm{~min}$
Thermal Properties of Matter

146440 Two similar heater coils separately take 10 minutes to boil a certain amount of water. If both coils are connected in series, time taken to boil the same amount of water will be

1 15 minutes
2 20 minutes
3 7.5 minutes
4 25 minutes
Thermal Properties of Matter

146441 The end $A$ of $\operatorname{rod} A B$ is length $1 \mathrm{~m}$ is maintained at $100^{\circ} \mathrm{C}$ and the end $B$ at $10^{\circ} \mathrm{C}$. The temperature at a distance of $60 \mathrm{~cm}$ from the end $B$ is

1 $64^{\circ} \mathrm{C}$
2 $36^{\circ} \mathrm{C}$
3 $46^{\circ} \mathrm{C}$
4 $72^{\circ} \mathrm{C}$
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Thermal Properties of Matter

146437 Statement (I) : Gas thermometers are less sensitive than liquid thermometers.
Statement (II) : The ratio of universal gas constant and Avagadro's number is called Boltzman's constant.
Statement (III) : The density of a given mass of a gas at constant pressure is inversely proportional to its absolute temperature.
The correct option among the following is

1 Statements I, II, III are true.
2 Statements I, II are true, but statement III is false.
3 Statements II, III are true, but statement I is false.
4 Statements I, II, III are false.
Thermal Properties of Matter

146438 An air conditioner (AC) removes heat rate of $1.2 \mathrm{~kJ} / \mathrm{sec}$ from a room. A power of $400 \mathrm{~W}$ is required to run the $A C$. The coefficient of performance $(\alpha)$ of the $\mathrm{AC}$ is $10 \%$ of that of the refrigerator operating between outside and room temperature. If outside temperature is $37^{\circ} \mathrm{C}$, what will be room temperature ?

1 $31^{\circ} \mathrm{C}$
2 $27^{\circ} \mathrm{C}$
3 $24^{\circ} \mathrm{C}$
4 $25^{\circ} \mathrm{C}$
Thermal Properties of Matter

146439 In a room where the temperature is $30^{\circ} \mathrm{C}$ a body cools from $61^{\circ} \mathrm{C}$ to $59^{\circ} \mathrm{C}$ in 4 minutes. The time taken by the body to cool from $51^{\circ} \mathrm{C}$ to $49^{\circ} \mathrm{C}$ will be:

1 $4 \mathrm{~min}$
2 $5 \mathrm{~min}$
3 $6 \mathrm{~min}$
4 $8 \mathrm{~min}$
Thermal Properties of Matter

146440 Two similar heater coils separately take 10 minutes to boil a certain amount of water. If both coils are connected in series, time taken to boil the same amount of water will be

1 15 minutes
2 20 minutes
3 7.5 minutes
4 25 minutes
Thermal Properties of Matter

146441 The end $A$ of $\operatorname{rod} A B$ is length $1 \mathrm{~m}$ is maintained at $100^{\circ} \mathrm{C}$ and the end $B$ at $10^{\circ} \mathrm{C}$. The temperature at a distance of $60 \mathrm{~cm}$ from the end $B$ is

1 $64^{\circ} \mathrm{C}$
2 $36^{\circ} \mathrm{C}$
3 $46^{\circ} \mathrm{C}$
4 $72^{\circ} \mathrm{C}$
Thermal Properties of Matter

146437 Statement (I) : Gas thermometers are less sensitive than liquid thermometers.
Statement (II) : The ratio of universal gas constant and Avagadro's number is called Boltzman's constant.
Statement (III) : The density of a given mass of a gas at constant pressure is inversely proportional to its absolute temperature.
The correct option among the following is

1 Statements I, II, III are true.
2 Statements I, II are true, but statement III is false.
3 Statements II, III are true, but statement I is false.
4 Statements I, II, III are false.
Thermal Properties of Matter

146438 An air conditioner (AC) removes heat rate of $1.2 \mathrm{~kJ} / \mathrm{sec}$ from a room. A power of $400 \mathrm{~W}$ is required to run the $A C$. The coefficient of performance $(\alpha)$ of the $\mathrm{AC}$ is $10 \%$ of that of the refrigerator operating between outside and room temperature. If outside temperature is $37^{\circ} \mathrm{C}$, what will be room temperature ?

1 $31^{\circ} \mathrm{C}$
2 $27^{\circ} \mathrm{C}$
3 $24^{\circ} \mathrm{C}$
4 $25^{\circ} \mathrm{C}$
Thermal Properties of Matter

146439 In a room where the temperature is $30^{\circ} \mathrm{C}$ a body cools from $61^{\circ} \mathrm{C}$ to $59^{\circ} \mathrm{C}$ in 4 minutes. The time taken by the body to cool from $51^{\circ} \mathrm{C}$ to $49^{\circ} \mathrm{C}$ will be:

1 $4 \mathrm{~min}$
2 $5 \mathrm{~min}$
3 $6 \mathrm{~min}$
4 $8 \mathrm{~min}$
Thermal Properties of Matter

146440 Two similar heater coils separately take 10 minutes to boil a certain amount of water. If both coils are connected in series, time taken to boil the same amount of water will be

1 15 minutes
2 20 minutes
3 7.5 minutes
4 25 minutes
Thermal Properties of Matter

146441 The end $A$ of $\operatorname{rod} A B$ is length $1 \mathrm{~m}$ is maintained at $100^{\circ} \mathrm{C}$ and the end $B$ at $10^{\circ} \mathrm{C}$. The temperature at a distance of $60 \mathrm{~cm}$ from the end $B$ is

1 $64^{\circ} \mathrm{C}$
2 $36^{\circ} \mathrm{C}$
3 $46^{\circ} \mathrm{C}$
4 $72^{\circ} \mathrm{C}$