A steel wire is of length 1 m, area of cross-section 2 mm^2 (Y=2 10^ 11 Nm^ -2 ). How much energy is required...

Question

A steel wire is of length 1 m, area of cross-section 2 mm^2 (Y=2 10^ 11 Nm^ -2 ). How much energy is required for increasing its length by 2 mm.

Accepted Answer

(B)

JEE Main Physics question