TS EAMCET · Physics · Thermal Properties of Matter
Find the ratio of the length of a steel rod and a copper rod if the steel rod is longer than the copper rod at any temperature.
[The coefficient of linear expansion for steel and copper are and respectively]
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
The difference between the lengths of copper and steel rods is constant. Therefore, the change in the length of both rods with temperature should be equal. Hence, αsLs∆T=αcLc∆T⇒LsLc=αcαs=1711
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