Q.What will be the change in the length of the metal rod of length 1 m when its temperature is increased from 20°C to 80°C? (Coefficient of linear expansion of metal = $12 \times 10^{-6} / ^\circ C$ )

7.20 \times 10^{-3}

3.60 \times 10^{-4}

7.20 \times 10^{-4}

3.60 \times 10^{-3}

The correct solution involves applying the fundamental concept to derive the final value step by step...

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Q.What will be the change in the length of the metal rod of length 1 m when its temperature is increased from 20°C to 80°C? (Coefficient of linear expansion of metal = 12×10−6/∘C12 \times 10^{-6} / ^\circ C12×10−6/∘C)