MHT CET 2024 Physics question
At certain temperature, rod A and rod B of different materials have and respectively. Their coefficients of linear expansion are and respectively. It is observed that the difference between their lengths remains constant at all temperatures. The ratio is given by
Answer: (B)
Solution
The difference in lengths stays constant only if both rods undergo the same increase in length for any temperature change : . Using : $α_AΔ T =
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