What is the operating principle of glass stem thermometers?

What is the operating principle of glass stem thermometers?

A) The refractive properties of the glass stem change with temperature, making the fluid level appear higher at higher temperatures.
B) The fluid inside the thermometer boils as it is heated, causing the liquid level to rise.
C) The fluid climbs the walls of the tube through capillary attraction, which works better at higher temperatures.
D) Expansion and contraction of the fluid makes the liquid level rise and fall with temperature.

[Ques. 2] Convert 200 Kelvin to Rankine.

A) 200 + 460 = 660R B) 200 1.8 = 360R C) 200 + 273 = 473R D) 200/1.8 = 111.11R

[Ques. 3] What is absolute zero?

A) The freezing point of water on an absolute temperature scale
B) The hottest possible temperature where matter is indistinguishable from energy
C) The coldest temperature possible where all molecular motion stops
D) The theoretical starting temperature for quantum physics experiments which is derived by measuring the average rotational velocity of the molecules

[Ques. 4] Convert 40 Celsius to Fahrenheit.

A) 40 + 32 = 72; 72 1.8 = 129.6F B) 40 + 40 = 80; 80/1.8 = 44.4; 44.4 - 40 = 4.4F
C) 40/1.8 = 22.2; 22.2 + 32 = 64.2F D) 40 1.8 = 72; 72 + 32 = 104F

[Ques. 5] What is the first color of visible light that is given off by heated objects as they increase in temperature?

A) Red B) Violet C) Blue D) Yellow

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What is the operating principle of glass stem thermometers?

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