Question

What principles are used in the (i) mercury (ii) constant volume gas thermometers?​

Answer 1

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Answer 2

Explanation:

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What principles are used in the mercury ?

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The principal used in any thermometer is expansion and contraction of liquid, i.e. mercury, according to the increase and decrease in temperature. When the temperature of body increases then mercury expands while when temperature of body decreases mercury contracts. The thermometer us labelled in any particular scale.

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What principles are used in the(ii) constant volume gas thermometers?

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This thermometer works on the principle of Law of Gay-Lussac. The law states that when the temperature of an ideal gas increases, there is a corresponding increase in pressure. Also, when the temperature decreases, the pressure too decreases correspondingly.

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