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When a steel wire fixed at one end is pu...

When a steel wire fixed at one end is pulled by a constant force F at its other end , its length increases by l.Which of the following statements is not correct?

A

Work done by the external forces is Fl

B

Some heat is prdoducedin the wire in the process.

C

The elastic potentital energy of the wire is Fl/2

D

The heat produced is equal to half of the elastic potential energy of the wire.

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