Three rods of equal lengths are joined to form an equilateral triangle A B C. D is the mid-point of A B. The coefficient of linear expansion is \alpha_1 for material of rod A B and \alpha_2 for material of rods A C and B C. If the distance D C remains constant for small changes in temperature, then

EAMCET Engineering 2010 Solved Paper

Section: Physics

Question : 87 of 160

Marks: +1, -0

Three rods of equal lengths are joined to form an equilateral triangle ABC. D is the mid-point of AB. The coefficient of linear expansion is α1 for material of rod AB and α2 for material of rods AC and BC. If the distance DC remains constant for small changes in temperature, then

α1=2α2
α1=4α2
α1=8α2
α1=α2

Validate

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