A steel rod of length 1 m is heated from to keeping its length constant

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A steel rod of length 1 m is heated from 25∘25^\circ to 75∘C75^\circ\text{C} keeping its length constant. The longitudinal strain developed in the rod is (Given, coefficient of linear expansion of steel = 12×10−6/∘C12 \times 10^{-6}/^\circ\text{C} ) (1) 6×10−46 \times 10^{-4} (2) −6×10−5-6 \times 10^{-5} (3) −6×10−4-6 \times 10^{-4} (4) zero

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