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The figure below shows an isosceles tria...

The figure below shows an isosceles triangular frame ABC made out of two different materials and D is the midpoint of the side AB. The coefficient of thermal expansion of the rod ADB is `alpha_(1)` and for the rods AC and BC is `alpha_(2)`. End C is fixed and the whole system is placed on a smooth horizontal surface. When the temperature of the system increases, it is found that the distance remains fixed, then

Text Solution

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The correct Answer is:
`4alpha_(2)=alpha_(1)`
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