The stress-strain curve for two materials \(A\) and \(B\) are as shown in the figure. Select the correct statement:

       

1.	Material \(A\) is less brittle and less elastic as compared to \(B\).
2.	Material \(A\) is more ductile and less elastic as compared to \(B\).
3.	Material \(A\) is less brittle and more elastic than \(B\).
4.	Material \(B\) is more brittle and more elastic than \(A\).

The Young's modulus of a wire is numerically equal to the stress at a point when:

Aluminium and iron rods of the same length and same diameter are combined together as shown in the figure. A force \(F\) is applied at one of the ends. The combined length is increased by \(2\) cm. The rods will have:

A uniform rod suspended from the ceiling gets elongated by its weight. Which one of the following graphs represents the variation of elongation with length, \(L\)?

1.		2.
3.		4.

A metallic rope of diameter \(1~ \text{mm}\) breaks at \(10 ~\text{N}\) force. If the wire of the same material has a diameter of \(2~\text{mm},\) then the breaking force is:

The elongation (\(X\)) of a steel wire varies with the elongating force (\(F\)) according to the graph:
(within elastic limit)

1.		2.
3.		4.

The increase in the length of a wire on stretching is \(0.04\)%. If Poisson's ratio for the material of wire is \(0.5,\) then the diameter of the wire will:

A wire of length \(L,\) area of cross section \(A\) is hanging from a fixed support. The length of the wire changes to \({L}_1\) when mass \(M\) is suspended from its free end. The expression for Young's modulus is:

The stress versus strain graph is shown for two wires. If \(Y_1\) and \(Y_2\) are Young modulus of wire \(A\) and \(B\) respectively, then the correct option is:

The stress-strain graphs for materials \(A\) and \(B\) are shown in the figure. Young’s modulus of material \(A\) is:
(the graphs are drawn to the same scale)