The length of a metal is `l_(1)` when the tension in it is `T_(1)` and is `l_(2)` when the tension is `T_(2)` . The natural length of the wire is

Options

A. `((l_(1)+l_(2)))/2`
B. `sqrt(l_(1)l_(2))`
C. `((l_(1)T_(2)-T_(2)l_(1)))/(T_(2)-T_(1))`
D. `((l_(1)T_(2)+T_(2)l_(1)))/(T_(2)+T_(1))`

Answer

C