Thermocouples excel in rapid temperature detection

Steps:

• Identify the context: Thermocouples measure temperature via voltage from two dissimilar metals joined at a junction.
• Compare to liquid-glass thermometers: These rely on thermal expansion, which is slower due to higher thermal mass.
• Evaluate advantages: Focus on response time, as thermocouples have low mass and directly convert heat to electrical signal.
• Select best property: Quicker response suits dynamic applications like industrial monitoring.

Why C is correct:

• Quicker response time arises from low thermal inertia, allowing faster equilibrium with surroundings per Newton's law of cooling.

Why the others are wrong:

• A: Greater heat capacity would slow response by absorbing more heat before changing.
• B: Thermocouples cover wider ranges (up to 2000°C) than liquid thermometers (limited to ~300°C).
• D: Non-linear output requires calibration, complicating use rather than advantaging it.

Final answer: C