Two steel truss members, $\mathrm{AC}$ and $\mathrm{BC}$, each having cross sectional area of $100 \mathrm{~mm}^{2}$, are subjected to a horizontal force $\mathbf{F}$ as shown in figure. All the joints are hinged.

If $\mathbf{F}=1 k N,$ the magnitude of the vertical reaction force developed at the point $\mathrm{B}$ in $k N$ is

(A) 0.63

(B) 0.32

(C) 1.26

(D) 1.46

Two steel truss members, $\mathrm{AC}$ and $\mathrm{BC}$, each having cross sectional area of $100 \mathrm{~mm}^{2}$, are subjected to a horizontal force $\mathbf{F}$ as shown in figure. All the joints are hinged.

If $\mathbf{F}=1 k N,$ the magnitude of the vertical reaction force developed at the point $\mathrm{B}$ in $k N$ is

(A) 0.63

(B) 0.32

(C) 1.26

(D) 1.46

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