JEE Main 202120 Jul, Morning shiftPhysicsMediumProperties of Solids and Liquids184× since 2002
The value of tension in a long thin metal wire has been changed from T₁ to T₂. The lengths of the metal wire at two different values of tension T₁ and T₂ are l₁ and l₂ respectively. The actual length of the metal wire is :