A metal wire of length L, area of cross-section A and young's modulus `Y` is stretched by a variable force `F` such that `F` is always slightly greater than the elastic forces of resistance in the wire. When the elongation of the wire is `l`

Options

A. The work done by F is `(Yal^(2))/(2L)`
B. The work done by F is `(Yal^(2))/(L)`
C. The elastic potential energy stored in the wire is `(Yal^(2))/(2L)`
D. No heat is produced during the elongation

Answer

A, C, D