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A steel rod of length 1 m rests on a smo...

A steel rod of length 1 m rests on a smooth horizontal base. If it is heated from `0^@C` to `100^@C`, what is the longitudinal strain developed?

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Given, `Delta T = 100^@C`
` A longitudinal strain develops if and only
if there is an opposition to the expansion.
Since there is no opposition in this case
the longitudinal strain= zero.
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