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A steel rod of length 1 m is heated from...

A steel rod of length `1 m` is heated from `25^@ "to" 75^@ C` keeping its length constant. The longitudinal strain developed in the rod is ( Given, coefficient of linear expansion of steel = `12 xx 10^-6//^@ C`).

A

`6xx10^(-6)`

B

`-6xx10^(-5)`

C

`-6xx10^(-4)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C
Strain developed
`epsilon=alphaDeltaT=(12xx 10^(-6))(50)=6xx10^(-4)`
Strain will be negative, as the rod is in a compressed state.
`epsilon=alphaDeltaT=(12xx10^(-6))(50)=6xx10^(-4)`
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