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2.2.1 Thermal expansion of solids, liquids and gases

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Question 47

The scale of a liquid-in-glass thermometer has not been marked. The length l l\,l of the liquid column increases uniformly with temperature.

The length l l\,l is measured when the thermometer bulb is placed in water at 0 ∘C0\text{ }^\circ\text{C}0 ∘C, and also when it is in water at 100 ∘C100\text{ }^\circ\text{C}100 ∘C. The table shows the results.

Temperature / ∘CLength l/cm03.010023.0 \begin{array}{|c|c|} \hline \text{Temperature } / \text{ }^\circ\text{C} & \text{Length } l / \text{cm} \\ \hline 0 & 3.0 \\ 100 & 23.0 \\ \hline \end{array} Temperature / ∘C0100​Length l/cm3.023.0​​

What is the value of l l\,l when the bulb is placed in water at 40 ∘C40\text{ }^\circ\text{C}40 ∘C?

A

8.0 cm8.0\text{ cm}8.0 cm

B

11.0 cm11.0\text{ cm}11.0 cm

C

12.0 cm12.0\text{ cm}12.0 cm

D

14.0 cm14.0\text{ cm}14.0 cm

Markscheme

2.2.1 Thermal expansion of solids, liquids and gases Questions

  1. IGCSE
  2. /Physics
  3. /2.2.1 Thermal expansion of solids, liquids and gases

96 exam-style questions on CIE IGCSE Physics 2.2.1 Thermal expansion of solids, liquids and gases. Each one has a worked solution and a mark scheme showing where the marks go.

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