A metal rod measures 50 cm in length at ...

A metal rod measures 50 cm in length at `20^(@)C`. When it is heated to `95^(@)C`, the length becomes `50.06 cm`. What is the coefficient of linear expansion of rod ? What will be the length of the rod at `-20^(@)C`?

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The correct Answer is:

`1.6 xx 10^(-5).^(@)C^(-1), 49.968cm`

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