The length of a metal rod at 0^(@)C is 0...

The length of a metal rod at `0^(@)C` is `0.5m` When it sis heated, its length incerases by `2.7mm`. The final temperature of rod is (coeff. Of linear excpansion of metal `= 90 xx 10^(-6//@)C`)

`20^(@)C`

`30^(@)C`

`40^(@)C`

`60^(@)C`

Text Solution

Verified by Experts

The correct Answer is:

`t_(2) - t_(1) = (l_(2) - l_(1))/(l_(1)alpha)`

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