A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is :

A wire fixed at the upper end stretches by length l by applying a forc

1.	A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is :
Answer» `F/(2l)` `(Fl)/2` `2Fl` Fl Solution :WORK done `=1/2` Stress `xx` Strain `xx` Volume `=1/2F/Axxl/LxxAL` `=1/2Fl` THUS correct CHOICE is (b).

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A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is :

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