When a copper wire of area of cross section 1 mm^(2)is stretched by a force of 10N. Then the work done per unit volume in stretching the wire is (Y=1.2xx10^(11)Nm^(-2))

When a copper wire of area of cross section 1 mm^(2)is stretched by a

1.	When a copper wire of area of cross section 1 mm^(2)is stretched by a force of 10N. Then the work done per unit volume in stretching the wire is (Y=1.2xx10^(11)Nm^(-2))
Answer» `416.7Jm^(-3)` `208.35Jm^(-3)` `833.4 JM^(-3)` `316.7 Jm^(-3)` ANSWER :1