Question
What are the advantages and disadvantages of gas thermometers?
Solution
Advantages of gas thermometers:
(i) Gas thermometers are very sensitive because the expansion of gases is considerable.
(ii) The gases have regular expansion.
(iii) Gas thermometers have wide range of temperature scale.
(iv) Permanent gases have close resemblance with perfect gas. Therefore, the thermometers filled with permanent gases give the reading close to thermodynamic scale.
(v) Gases have low thermal capacity.
Disadvantages of gas thermometers:
(i) It is not a direct reading thermometer.
(ii) It is not portable.
(iii) It cannot measure accurately the rapidly changing temperatures.
