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One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which rod will expand more? Give reason. - Physics

Answer in Brief

One rod of copper and another identical rod of iron are heated to the same rise in temperature. Which rod will expand more? Give reason.

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Solution

When two identical rods (same length) are of different material and heated to the same rise in temperature, the copper rod will expand more than iron, since expansion depends on the nature of the material.
(Coefficient of linear expansion of copper 17 × 10-6 per °C > iron 13 × 10-6 per °C)

Concept: Expansion of Substances (Thermal Expansion) - Expansion of Solids
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APPEARS IN

Selina Concise Physics Class 8 ICSE
Chapter 6 Heat Transfer
Short/long Answer Questions | Q 21 | Page 121
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