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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A metal rod (A) of 25cm length expands by 0.050cm when its temperature is raised from 0∘C to 100∘C. Another rod (B) of a different metal of length 40cm expands by 0.040cm for the same rise in temperature. A third rod ( C) of 50cm length is made up of pieces of rods (A) and (B) placed end to end expands by

A metal rod (A) of 25cm length expands by 0.050cm when its temperature is raised from 0∘C to 100∘C. Another rod (B) of a different metal of length 40cm expands by 0.040cm for the same rise in temperature. A third rod ( C) of 50cm length is made up of pieces of rods (A) and (B) placed end to end expands by

A brass rod of length 50cm and diameter 3.0cm is joined to a steel rod of the same length and diameter. What is the change in length of the combined rod at 250∘C if the original length are at 40.0∘C?