Question 371: Properties of Matter

Question

Copper of fixed volume V is drawn into wire of length $$l$$. When this wire is subjected to a constant force F, the extension produced in the wire is $$\Delta $$$$l$$. Which of the following graphs is a straight line ?

Accepted Answer

From Young Modulus $$Y = Fl/A\Delta l = Fl/\left( {V/l} \right)\Delta l$$
Now $$\Delta l = F{l^2}/VY$$
Also $$\Delta l \propto {l^2}$$

Answer

$$\Delta $$$$l$$ versus 1/$$l$$

Answer

$$\Delta $$$$l$$ versus $$l$$
2

Answer

$$\Delta $$$$l$$ versus 1/$$l$$
2

Answer

$$\Delta $$$$l$$ versus $$l$$

Properties of Matter

Copper of fixed volume V is drawn into wire of length $l. When this wire is subjected to a constant force F, the extension produced in the wire is \Delta l$. Which of the following graphs is a straight line ?

Choose the correct answer: