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NEETPhysicsMechanical Properties of Solids

An equilateral triangle ABC is formed by two Cu rods AB and BC and one Al rod. It is heated in such a way that temperature of each rod increases by ∆T. Find change in the angle ABC. [Coefficient of linear expansion for Cu is α 1 ,Coeff. of linear expansion for Al is α 2 ]

Options

  1. Ad = ( 2 ₁ - ₂ ) t 3
  2. Bd = ( 2 ₁ + ₂ ) t 3
  3. Cd = 2 ( ₁ - ₂ ) t 3
  4. Dd = ( ₁ + ₂ ) t 3

Correct answer

C. d = 2 ( ₁ - ₂ ) t 3

Step-by-step solution

Correct Option is : (C) d = 2 ( ₁ - ₂ ) t 3

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