Scale Conversions

Q. The triple points of neon and carbon dioxide are 24.57 K and 216.55 K respectively. Express these temperatures on the Celsius and Fahrenheit scales

Q.

Recently, the phenomenon of superconductivity has been observed at 95 K. This temperature is nearly equal to

1. - 288°F

2. - 146°F

3. - 368°F

4. +178°F

Q.

Name the scale of temperature used for measuring temperature in our everyday life?

Q. Answer the following : (a) The triple-point of water is a standard fixed point in modern thermometry. Why ? What is wrong in taking the melting point of ice and the boiling point of water as standard fixed points (as was originally done in the Celsius scale) ? (b) There were two fixed points in the original Celsius scale as mentioned above which were assigned the number 0 °C and 100 °C respectively. On the absolute scale, one of the fixed points is the triple-point of water, which on the Kelvin absolute scale is assigned the number 273.16 K. What is the other fixed point on this (Kelvin) scale ? (c) The absolute temperature (Kelvin scale) T is related to the temperature tc on the Celsius scale by t_c = T – 273.15 Why do we have 273.15 in this relation, and not 273.16 ? (d) What is the temperature of the triple-point of water on an absolute scale whose unit interval size is equal to that of the Fahrenheit scale ?

Q.

What is the mathematical relation between Fahrenheit and Celsius scales?

Q. Assertion: The temperature at which centigrade and Fahrenheit thermometer read the same is $-40$ on each scale.
Reason: There is no relation between Fahrenheit and centigrade temperature scale.

1. Both Assertion and Reason are correct and Reason is the correct explanation.
2. Both Assertion and Reason are correct and Reason is not the correct explanation.
3. Assertion is correct but Reason is incorrect.
4. Assertion is incorrect but Reason is correct.

Q.

Two thermometers A and B are calibrated in different scales. When both the thermometers are placed in a container filled with hot water the mercury thread in the thermometer A has moved through $10$ divisions whereas the mercury thread in thermometer B has moved through $15$ divisions. The reading on thermometers A and B are ${20}^0$and ${40}^0$, respectively. If the lower fixed point of the thermometer A is $0^0$, determine the lower fixed point of the thermometer B.

Q. why there is linear relationship between different scales of temperature?

Q. A bar of iron is 1at 20 degree c. At 19 degree c it will be( Alfa Fe 0.18*1/10^6)

Q. Two absolute scales A and B have triple points of water defined to be 200 A and 350 B. What is the relation between T_A and T_B ?

Q. Mercury thermometer is created by making equal markings between 0⁰ C and 100⁰ C, assuming that mercury expands linearly.

1. False
2. True

Q. On Fahrenheit scale, the difference in boiling and freezing points of water is .

1. 200 ℉
2. 180 ℉
3. 100 ℉
4. 212 ℉

Q. The freezing point on a thermometer is marked as ${20}^{\circ }$ and the boiling point at as ${150}^{\circ }$. A temperature of ${60}^{\circ }$C on this thermometer will be read as

1. ${40}^{\circ }$
2. ${65}^{\circ }$
3. ${98}^{\circ }$
4. ${110}^{\circ }$

Q. In a given scale $X$, the ice point is $40{}^{\circ }\text{X}$ and the steam point is $120{}^{\circ }\text{X}$. For another scale $Y$, the ice point and steam point are $-30{}^{\circ }\text{Y}$ and $130{}^{\circ }\text{Y}$ respectively. If $X$ reads $50{}^{\circ }\text{X}$ temperature of a body, then $Y$ would read

1. $-5{}^{\circ }\text{C}$
2. $-8{}^{\circ }\text{C}$
3. $-10{}^{\circ }\text{C}$
4. $-12{}^{\circ }\text{C}$

Q.

Browsing through Mr. Fox's old scientific notes, Bruce Wayne encounters a secret temperature scale, which Mr. Fox called Z, in order to keep the Bat mobile's technology a secret. On that scale, the freezing and the boiling points of water were recorded to be -7⁰Z and 78⁰Z, respectively. The records instruct to maintain the coolant temperature at -24⁰Z for top speed. Mr. Wayne, naturally comfortable with the Fahrenheit scale due to his American upbringing, needs to calculate the coolant temperature in ⁰F. Help him choose the correct value

1. 10⁰F

2. 5⁰F

3. 0⁰F

4. -4⁰F

Q. Which of the lines in the figure represents the relation between Celsius and Fahrenheit temperatures?

1. $A$
2. $B$
3. $C$
4. $D$

Q.

Browsing through Mr. Fox's old scientific notes, Bruce Wayne encounters a secret temperature scale, which Mr. Fox called Z, in order to keep the Batmobile's technology a secret. On that scale, the freezing and the boiling points of water were recorded to be -7⁰Z and 78⁰Z, respectively. The records instruct to maintain the coolant temperature at -24⁰Z for top speed. Mr. Wayne, naturally comfortable with the Fahrenheit scale due to his American upbringing, needs to calculate the coolant temperature in ⁰F. Help him choose the correct value.

1. 10℉

2. -4℉

3. 5℉

4. 0

Q. Change in current will give change in temperature if we wish to measure varying temperature using a resistor.

1. False
2. True

Q. Two thermometers X and Y have ice points marked at ${15}^{\circ }$ and ${25}^{\circ }$ and steam points marked as ${75}^{\circ }$ and ${125}^{\circ }$ respectively. When thermometer X measures the temperature of a bath as ${60}^{\circ }$ on it, what would thermometer Y read when it is used to measure the temperature of the same bath?

1. ${60}^{\circ }$
2. ${75}^{\circ }$
3. ${100}^{\circ }$
4. ${90}^{\circ }$

Q.

The temperature of three bodies A, B and C are increased by $1°C,1°F,and1K$, respectively. What will be the relation between these temperatures, if these change in temperature are represented by $∆C,∆Fand∆K$, respectively?

1. $∆C=∆F=∆K$

2. $∆C=∆K>∆F$

3. $∆F>∆C>∆K$

4. $∆F=∆C>∆K$

Q. Which of the curves in figure represents the relation between Celsius and Fahrenheit temperatures?

1. $1$
2. $2$
3. $3$
4. $4$