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Two different wires having lengths L1 and L2, and respective temperature coefficient of linear expansion α1 and α2,

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Two different wires having lengths L1 and L2, and respective temperature coefficient of linear expansion α1 and α2, are joined end-to-end. Then the effective temperature coefficient of linear expansion is

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2 Answers

+2 votes
by (50.4k points)

The correct option is (4).

+1 vote
by (20 points)

This is answer

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