Copper of fixed volume V is drawn into a wire of length l. When this wire is subjected to a constant force F, the extension produced in the wire is Deltal. If Y represents the Young's modulus, then which of the following graphs is a straight line?

Copper of fixed volume V is drawn into a wire of length l. When this w

1.	Copper of fixed volume V is drawn into a wire of length l. When this wire is subjected to a constant force F, the extension produced in the wire is Deltal. If Y represents the Young's modulus, then which of the following graphs is a straight line?
Answer» `Delta L` VERSUS V `Delta l` versus Y `Delta l` versus F `Deltal` versus `1/l` Solution :From Young.s modulus. `Y = (FL)/(A Delta l) = (Fl)/((V/l)Delta l) = (Fl^2)/(V cdot Deltal)` `Delta l = (F cdot l^2)/(V cdot Y)`