The thermometer whose reading is indicated by a change in color of its thermometric property is the?
a
bi-metalic strip thermometer
b
thermocouple
c
platinium resistance thermometer
d
optical pyrometer
Explanation
Correct Option
dVideo Explanation
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Favouregbokhare
3 months ago
Bi-metallic strip thermometer → works by bending (no color change)
Thermocouple → works by voltage (no color change)
Platinum resistance thermometer → works by resistance (no color change)
Optical pyrometer → measures temperature based on color/brightness of hot objects


