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QPage 46: Q10: HC Verma: Concepts of Physics - Volume 2 Calorimetry Page 46: Q10 Solution: Should a thermometer bulb have large heat capacity or small…

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often think a larger heat capacity of the bulb prevents expansion and yields accurate readings, but heat capacity only affects how fast the bulb’s temperature changes. The liquid’s coefficient of thermal expansion determines the volume change; a bulb with too large heat capacity will lag in response.

Should a thermometer bulb have large heat capacity or small heat capacity?

Step-by-Step Verified Solution

**Answer:** The thermometer bulb should have large heat capacity because if it has lower heat capacity, it may expand at high temperatures resulting in false readings. Large heat capacity of the thermometer bulb ensures the correct reading of temperature by restricting the bulb from expanding.[citation:13]

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