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

The force constant of a wire is K. What is the work done in increasing the length of the wire by l ?

This work done to increase the length in a wire by load 'Mg' is

This work done to increase the length in a wire by load 'Mg' is

What amount of work is done in increasing the length of a wire through unity?

What amount of work is done in increasing the length of a wire through unity?

K is the force constant of a spring. The work done in increasing its extension from l_1 to l_2 will be

k is the force constant of a spring. The work done in increasing its extension from l_(1) to l_(2) will be:

k is the force constant of a spring. The work done in increasing its extension from l_(1) to l_(2) will be:

K is the force constant of a spring. The work done is increasing its extension from l_(1) to l_(2) will be