For a constant force the work done in stretching if spring constant `k_(1)gtk_(2)` then energy stored in two wire related as

Assertion If a wire is stretched, only half of the work done in stretching the wire remains stored as elastic potential energy. Reason Potential energy stored in the wire is 1/2 (stress) xx (strain)

Assertion If a wire is stretched, only half of the work done in stretching the wire remains stored as elastic potential energy. Reason Potential energy stored in the wire is 1/2 (stress) xx (strain)

A spring of force constant k extends by a length X on loading . If T is the tension in the spring then the energy stored in the spring is

A spring of force constant k extends by a length X on loading . If T is the tension in the spring then the energy stored in the spring is

The work done by the external agent in stretching a spring of force constant k from length l_(1) to l_(2) is

If the force constant of a wire is K, the work done in increasing the length of the wire by l is