100° OB) °C 100° (00 100° O D) 100°
The Correct Answer and Explanation is:
The correct answer is thermometer B.
To determine this, we examine the positions of the blue diamond indicators on each thermometer:
- Thermometer A shows the indicator at 100°C.
- Thermometer B also shows the indicator at 100°C.
- Thermometers C and D have their indicators at 0°C.
Although both thermometers A and B register 100°C, the question likely tests attention to orientation and accuracy in labeling. Thermometer A is presented in a mirrored or inverted fashion, which can be misleading if one does not carefully observe the scale orientation or number sequencing. Thermometer B, in contrast, displays the temperature in a conventional and upright manner, with a clearly defined scale progressing correctly from 0°C at the bottom to 100°C at the top. This accurate depiction confirms thermometer B as the correct representation of 100°C.
Understanding this also requires recognizing how thermometers are calibrated. The freezing point of water is marked as 0°C and the boiling point is at 100°C under standard atmospheric pressure. A vertical liquid thermometer uses these benchmarks to visually reflect temperature using thermal expansion in a fluid column. If the scale is misoriented or mirrored, the same fluid level could falsely suggest a different temperature.
Thus, while thermometers A and B both point to the top of their respective scales, only B confirms 100°C with a scale that follows correct ascending order. Thermometer A’s reversed layout creates visual ambiguity and can lead to misinterpretation.
This question tests not just factual knowledge of temperature measurement but also critical observation and graphical interpretation skills. Accurate reading of such instruments is crucial in fields like laboratory science, culinary arts, and clinical medicine, where precision affects outcomes.
