Question

Which one of the following thermometers can measure a long range of temperature?

(A) Thermocouple
(B) Platinum resistance thermometer
(C) Gas thermometer
(D) Liquid thermometer​

Answer 1

Answer:

option A

Explanation:

Thermocouple is the answer

Answer 2

Answer:

Question

Of the following thermometers, the one which can be used for measuring rapidly changing temperature is a :

Explanation:

Correct option is A

Thermocouple thermometer

Principle of thermometer:

The temperature of a substance can be measured by measuring

(1) increase in volume of a gas on heating at constant pressure

(2) increase in pressure of a gas on heating at constant volume

(3) increase in resistance of a conductor on heating.

Gas thermometer, platinum resistance, thermometer, vapour pressure thermometers are not ideal for measuring changing temperatures.

Thermocouple Thermometer:

A thermocouple thermometer is formed by joining two dissimilar metals and kept at different temperatures and is ideal for measuring rapidly changing temperatures.

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