The area of cross-section of a railway track is 0.01 m2 . The temperature variation is 10 ∘C. Coefficient of linear expansion of material of track is 10−5 /∘C. The energy stored per meter in the track is Jm−1. (Young's modulus of material of track is 1011 Nm−2)

The area of cross-section of a railway track is 0.01 m2 . The temperat

1.	The area of cross-section of a railway track is 0.01 m2 . The temperature variation is 10 ∘C. Coefficient of linear expansion of material of track is 10−5 /∘C. The energy stored per meter in the track is Jm−1. (Young's modulus of material of track is 1011 Nm−2)
Answer» The area of cross-section of a railway track is $0.01 m^{2}$ . The temperature variation is $10^{\circ} C$ . Coefficient of linear expansion of material of track is $10^{- 5} /^{\circ} C$ . The energy stored per meter in the track is ${Jm}^{- 1}$ . (Young's modulus of material of track is $10^{11} {Nm}^{- 2})$

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The area of cross-section of a railway track is 0.01 m2 . The temperature variation is 10 ∘C. Coefficient of linear expansion of material of track is 10−5 /∘C. The energy stored per meter in the track is Jm−1. (Young's modulus of material of track is 1011 Nm−2)

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