Questions
Three rods of equal length are joined to form an equilateral triangle ABC. D is midpoint of AB. Coefficient of linear expansion of AB is for AC and BC. If distance DC remains constant for small changes is temperature, then
detailed solution
Correct option is C
Δl=l1αΔtDC2=AC2−AD2=l2−l22Talk to our academic expert!
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A rotating solid metal sphere is heated by . If then percentage change in its moment of inertia is
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