5. A thermometric liquid which can measure temp
DY QUESTIONS
What is a thermometer? Describe briefly the
construction of Celsius thermometer,
(a) What do you understand by the term
"standard points of a thermometer?
(b) Define lower standard point and state its
value in °C, °F and Kelvin.
(c) Define upper standard point and state its
value in °C, °F and Kelvin,
Answers
Answer:
5. A thermometric liquid which can measure temp can be measured in celcius
Answer: A thermometer has a glass tube sealed at both ends and is partly filled with a liquid like mercury or alcohol. As the temperature around the thermometer's bulb heats up, the liquid rises in the glass tube. The glass tube is mounted on a backboard that is marked in units called degrees. A..To calibrate a thermometer is to mark a thermometer so that you can use it to measure temperature accurately. A fixed point is a standard degree of hotness or coldness such as the melting point of ice or boiling point of water.
b.The lower standard point on this scale is 273K and upper standard point is 373K. There 273 divisions below lower standard point. Its 0K is equal to -273oC. To convert Celsius temperature to kelvin temperature following formulas is used.
c.K = °C + 273
It was designed to honour Lord Kelvin, a renowned physicist. The lower standard point on this scale is 273K and upper standard point is 373K. There 273 divisions below lower standard point. Its 0K is equal to -273oC.
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