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NEET 2016 Physics question

PhysicsThermal Properties of MatterNEET 2016

Coefficient of linear expansion of brass and steel rods are and . Lengths of brass and steel rods are and respectively. If is maintained same at all temperatures, which one of the following relations holds good?

Answer: (4)

Solution

If stays constant at every temperature, the two rods must lengthen by the same amount for any temperature rise : . With : $α_1Δ T =

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Question ID VK-091850