What are the different properties of the material used in heat th… - Vidyadip

Question

What are the different properties of the material used in heat thermometer?

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Answer

The material used in heat thermometer has the following properties :
(i) The boiling point should be high and the freezing point should be low so that a wider range of temperature can be measured.
(ii) The co-efficient an expansion of the substance should be high so that the temperature be sensitive.
(iii) It should be available in pure state.
(iv) It should not stick to the wall of the glass tube.
(v) Its thermal conductivity should be good.
(vi) Its expansion should be uniform, so that this calibration pair can be formed.
(vii) It should not be volatile.
(viii) It should be available in pure state.

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