JEE Main 2026 Physics question

A brass wire of length 2 m and radius 1 mm at is held taut between two rigid supports. Initially it was cooled to a temperature of creating a tension T in the wire. The temperature to which the wire has to be cooled in order to increase the tension in it to 1.4 T, is

• (1)
• (2)Correct
• (3)
• (4)