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?
$\Delta l \rightarrow \frac {1}{l}$
$\Delta l \rightarrow l^2$
$ \Delta l \rightarrow \frac {1}{l^2}$
$\Delta l \rightarrow l$
The diagram shows a force-extension graph for a rubber band. Consider the following statements
$I.$ It will be easier to compress this rubber than expand it
$II.$ Rubber does not return to its original length after it is stretched
$III.$ The rubber band will get heated if it is stretched and released
Which of these can be deduced from the graph
In Column$-I$ there are two graphs and in Column$-II$ whose graph is for this are given. Join them appropriately :
Column $-I$ | Column $-II$ |
$(a)$ image | $(i)$ $A$ is ductile |
$(b)$ image | $(ii)$ $A$ is brittle |
$(iii)$ $B$ is ductile | |
$(iv)$ $B$ is brittle |
The load versus elongation graph for four wires of the same material is shown in the figure. The thickest wire is represented by the line
The graph is drawn between the applied force $F$ and the strain $(x)$ for a thin uniform wire. The wire behaves as a liquid in the part
Which of the following is the graph showing stress-strain variation for elastomers?