Answer in Brief
Two iron rods – one 10 m long and the other 5 m long, are heated to the same rise in temperature. Which will expand more?
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Solution
Lt – L0 ∝ L0
∴ The rod having greater length will expand more when rods are heated to the same temperature.
∴ Rod with 10 m length will expand more.
Concept: Expansion of Substances (Thermal Expansion) - Expansion of Solids
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