Physics - Heat & Thermo Question with Solution | TestHub

A copper rod of$88 \mathrm{c}\mathrm{m}$and an aluminum rod of unknown length have their increase in length independent of increase in temperature. The length of aluminum rod is$\left({\alpha }_{\mathrm{C}\mathrm{u}}=1.7\times {10}^{-5} {\mathrm{K}}^{-1}\mathrm{a}\mathrm{n}\mathrm{d}{\alpha }_{\mathrm{Al}}=2.2\times {10}^{-5}{\mathrm{K}}^{-1}\right)$NEET 2019 (All India)