Thermometers and Temperature Measurement
Learn about different types of thermometers, their construction, working principles, temperature scales, and applications in measuring temperature.
Questions
Two thermometers are constructed in the same way except that one has a spherical bulb and the other a cylindrical bulb; which one will respond quickly to temperature changes?
- Spherical bulb thermometer
- Cylindrical bulb thermometer
- both equally
- either
A thermometer reads $0^{\circ}$ as $10^{\circ}$ and $100^{\circ}$ as $90^{\circ}C$. Then
Find the reading of the temperature if the temperature is $40^{\circ}C$?
- $42^{\circ}C$
- $40^{\circ}C$
- $35^{\circ}C$
- $45^{\circ}C$
If two temperatures differ by 25 degrees on Celsius scale, the difference of temperature on Fahrenheit scale is
- $65^{\circ}$
- $45^{\circ}$
- $38^{\circ}$
- $25^{\circ}$
A Centigrade and Fahrenheit thermometers are dipped in boiling water. The water temperature is lowered unit the Fahrenheit thermometre registers a temperature of $140^o$. The fall of temperature as registered by the Centigrade thermometre is :
- $80^o$C
- $40^o$C
- $50^o$C
- $90^o$C
On a new scale of temperature (which is linear) and called the W scale, the freezing and boiling points of water are $39^o$W and $239^o$W respectively. What will be the temperature on the new scale, corresponding to a temperature of $39^o$C on the Celsius scale ?
- $78^o$W
- $117^o$W
- $200^o$W
- $139^o$W
The range of a clinical thermometer is
- 0-100$^0$C
- 32-214$^0$F
- 0-1273$^0$C
- 35-42$^0$C
At low temperatures ________ type of thermometer is used.
- mercury thermometer
- water thermometer
- alcohol thermometer
- thermometers cannot be used
The most commonly used thermometric substance is
- water
- alcohol
- mercury
- steam
State whether given statement is True or False
The upper standard point of a thermometer is 273 K
- True
- False
A Fahrenheit thermometer registers $107^{o}F$ while a faulty Celsius thermometer registers $42^{o}C$. Find the error in the later
- $0.37^{o}$
- $0.87^{o}$
- $0.67^{o}$
- $48$
The pressure of a gass filled in the bulb of a constant volume gas thermometer at temperatures $0^{o}C$ and $100^{o}C$ are $27.50\ cm$ and $37.50\ cm$ of $Hg$ respectively. At an unknown temperature the pressure is $32.45\ cm$ of $Hg$. Unknown temperature is
- $30^{o}C$
- $39^{o}C$
- $49.5^{o}C$
- $29.6^{o}C$
Mercury thermometers can be used to measure temperatures upto:
- $100^{o}C$
- $212^{o}C$
- $360^{o}C$
- $500^{o}C$
We cannot use mercury thermometer at low temperatures because:
- Glass might break down at low temperature.
- Heat does not flow from the body whose measurement we are taking with the thermometer.
- At low temperatures mercury becomes transparent and it becomes difficult to take the readings.
- Mercury freezes at low temperatures.
Mercury is commonly used as a thermometric fluid rather than water because
- specific heat of mercury is less than water
- specific heat of mercury is more than water
- mercury has greater visibility than water
- density of mercury is more than the water
A thermometer is gradated in millimeters . It registers -3 mm when the bulb of themometer is a pure melting ice and 22 mm when the thermometer is in stem at a pressure of 1 atmosphere. The temperature in $^{ \circ }C$ when the thermometer registers 13 mm is
- $\frac { 13 }{ 25 } \times 100$
- $\dfrac { 16 }{ 25 } \times 100$
- $\dfrac { 13 }{ 22 } \times 100$
- $\dfrac { 16 }{ 22 } \times 100$