Railway lines are laid with gaps to allow for expansion. If the gap betweeen steel rails 60 m long
Channel: Doubtnut
Date: 2020-08-02

Railway lines are laid with gaps to allow for expansion. If the gap betweeen steel rails 60 m long be 3.60 cm at `10^(@)C`, then at what temperature will the lines just touch? Coefficient of linear expansion of steel `=11//10^(-6) .^(@)C^(-1)`.