Temperature & Thermometers — A/L Physics

How do I practise Temperature & Thermometers?

1 question with a worked solution

1. In a constant-volume gas thermometer, the pressure of a fixed mass of gas is 80.0 kPa at the ice point (0 °C) and 108.0 kPa at the steam point (100 °C). What is the temperature in °C when the gas pressure reads 96.8 kPa?
   1. A) 80.0 °C
   2. B) 60.0 °C
   3. C) 70.0 °C
   4. D) 50.0 °C
   Check my answer

   Correct answer: B) 60.0 °C

   For a constant-volume gas thermometer on the Celsius scale: θ = [(P_θ - P₀) / (P₁₀₀ - P₀)] × 100 °C. Substituting gives: θ = [(96.8 - 80.0) / (108.0 - 80.0)] × 100 = (16.8 / 28.0) × 100 = 0.60 × 100 = 60.0 °C.

   Show worked solution

   Step 1: Formula: θ = [(P_θ - P₀) / (P₁₀₀ - P₀)] × 100. Step 2: θ = [(96.8 - 80.0) / (108.0 - 80.0)] × 100 = (16.8 / 28.0) × 100 = 60.0 °C. Answer: 60.0 °C.
   Modelled on: the A/L Physics examination pattern

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Where does Temperature & Thermometers fit in the syllabus?

Unit 4.1 · Year 1 · Term 2