When a force is applied at one end of an elastic wire it produces at strain ∝ in the wire. If y is the youngs modulus of the material of the wire the amount of energy stored per unit volume of the wire is given by_________________?

(A) Y∝ (X)
(B) 2Y∝ (X)
(C) Y∝/2 (X)
(D) Y∝2 ()

Answers: When a force is applied at one end of an elastic wire it produces at strain ∝ in the wire. If y is the youngs modulus of the meterial of the wire the amount of energy stored per unit  volume of the wire is given by Y∝2