Hey there,
SPM Physics Heat Q21
- Which of the following liquids A, B, C or D can be used in a thermometer to measure temperatures from -50^{\circ} \mathrm{C} to 50^{\circ} \mathrm{C} ?
Antara cecair A, B, C atau D yang manakah boleh digunakan dalam termometer untuk mengukur suhu dari -50 ^ { }^{\circ} hingga 50^{\circ} \mathrm{C} ?
SPM Physics Heat Q21 Solution
In order for the thermometer to be effective in measuring temperature from -50 C to 50 C, it needs to remain in the same state, i.e. in liquid state from -50 C to 50 C. This is assuming the thermometer reading is dependent on the volumetric expansion of liquid.
Let’s visualize with a simple image:
Hence, answer is definitely A.
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I understand now🥳…Thank you very much👍