The thermometer whose reading is indicated by a change in...
The thermometer whose reading is indicated by a change in color of its thermometric property is the?
bi-metalic strip thermometer
thermocouple
platinium resistance thermometer
optical pyrometer
Correct answer is D
A pyrometer is instrument for measuring high temperature.
The optical pyrometer is one in which the luminous radiation from the hot body is compared with that from a known source.
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