# Thermal Expansion Practice Questions

The following physics revision questions are provided in support of the physics tutorial on Thermal Expansion. In addition to this tutorial, we also provide revision notes, a video tutorial, revision questions on this page (which allow you to check your understanding of the topic) and calculators which provide full, step by step calculations for each of the formula in the Thermal Expansion tutorials. The Thermal Expansion calculators are particularly useful for ensuring your step-by-step calculations are correct as well as ensuring your final result is accurate.

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Thermodynamics Learning Material
Tutorial IDTitleTutorialVideo
Tutorial
Revision
Notes
Revision
Questions
13.2Thermal Expansion

## Physics Revision Questions for Thermal Expansion

1) A long nickel bar elongates by 3 mm when its temperature increases by 130 K. What was the original length of the bar if the coefficient of linear expansion for nickel is 13 × 10-6 K-1?

1. 0.520 m
2. 0.658 m
3. 1.923 m
4. 1.520 m

2) The coefficient of thermal expansion for nylon is 100 × 10-6 K-1. How many square centimeters a nylon cloth of area equal to 0.4 m2 will shrink if the environment's temperature decreases by 20°C?

1. 40 cm2
2. 160 cm2
3. 0.0016 cm2
4. 16 cm2

3) A bimetallic strip (at 20°C) made of one platinum and one gold bar of equal lengths is shown in the figure below.

The linear coefficient of thermal expansion for gold is 14.2 × 10-6 K-1 and that of platinum is 9 × 10-6 K-1. What is the shape of the bimetallic strip when it cools down to -40°C?

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4. Check your calculations for Thermodynamics questions with our excellent Thermodynamics calculators which contain full equations and calculations clearly displayed line by line. See the Thermodynamics Calculators by iCalculator™ below.
5. Continuing learning thermodynamics - read our next physics tutorial: Absorption of Heat