A copper rod of 88 c m and an aluminum rod of unknown length have their increase in length independent of increase in temperature. The length of aluminum rod is α C u = 1.7 × 10 - 5 K - 1 a n d α Al = 2.2 × 10 - 5 K - 1

Question

A copper rod of 88 c m and an aluminum rod of unknown length have their increase in length independent of increase in temperature. The length of aluminum rod is α C u = 1.7 × 10 - 5 K - 1 a n d α Al = 2.2 × 10 - 5 K - 1, 6.8 c m, 113.9 c m, 88 c m, 68 c m

MARKS App · Accepted Answer

Increase in length is independent of temperature, L cu α cu = L Al α Al L Al = 88 c m 1.7 × 10 - 5 2.2 × 10 - 5 = 68 c m

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