two rods is 4:3 14. The ratio of th...
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two rods is 4:3 14. The ratio of the lengths of two rods The ratio of their coefficients of cu 'expansion is 2:3. Then the ratio of their li 'expansions when they are heated throne same temperature difference is 1) 2:1 2) 1:2 3) 8:9 4) 9:8

NEET/Medical Exams
Physics
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bt ( y_{1}=2 y, quad alpha_{1}=frac{2 y}{3} ) [ y_{2}=3 y quad alpha_{2}=frac{3 y^{3}}{3} ] If ( =L_{1}=4 x ) [ begin{array}{c} L_{2}=3 x Delta L_{1}=L_{1} alpha_{1} Delta t=4 x times frac{2 y}{3} Delta T Delta L_{2}=4 alpha_{2} Delta T=3 x times frac{3 y}{3} Delta T end{array} ] ( frac{Delta L_{1}}{Delta L_{2}}=frac{8left(x^{x y} yright)^{2}}{frac{9 x y^{3} Delta 7}{x}}=8: 9 ) Ans
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