The length of a metal rod at 0^(@)C is 0.5m. When it is heated, its length increases, by 2.7 mm.The final temperature of the rod is (coefficient of linear expansion of the metal =90xx10^(-6)//^(@)C)……………. .

The length of a metal rod at 0^(@)C is 0.5m. When it is heated, its le

1.	The length of a metal rod at 0^(@)C is 0.5m. When it is heated, its length increases, by 2.7 mm.The final temperature of the rod is (coefficient of linear expansion of the metal =90xx10^(-6)//^(@)C)……………. .
Answer» `20^(@)C` `30^(@)C` `40^(@)C` `60^(@)C` Solution :`l_(t)=l_(0)(1+alphat)` `therefore""t=(l_(t)-l_(0))/(l_(0)alpha)=(2.7xx10^(-3))/(0.5xx90xx10^(-6)), t=60^(@)`