Two rods, one of aluminum and the other made of steel, having initial lengths l 1 and l 2…
Physics · JEE Advanced · NTA Exams — Properties of Solids and Liquids
Two rods, one of aluminum and the other made of steel, having initial lengths l1 and l2 are connected together to form a single rod of length l1 + l2. The co-efficients of linear expansion for aluminum and steel are αa and αs respectively. If the length of each rod increases by the same amount when their temperature are raised by t°C, then find the ratio l1/(l1 + l2).
- as / aa
- aa /as
- as/(as + aa)
- aa/(aa + as).
Answer
(D) a a /( a a + a s ).
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