Out of the following thermometers, the one which can be used for measuring a rapidly changing temperature is
A
Thermocouple thermometer
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B
Gas thermometer
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C
Maximum resistance thermometer
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D
Vapour pressure thermometer
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Solution
The correct option is A Thermocouple thermometer Sensitivity of thermocouple thermometer is very high as heat can conduct faster in it and result in rapid change of length . So these thermometer can be used for rapidly changing temperature.