A) 8
B) 6
C) 8
D) 6
Correct Answer: B
Solution :
\[\overrightarrow{AB}=-\mathbf{i}-4\mathbf{j},\] \[\overrightarrow{CD}=-2\mathbf{i}+(\lambda -2)\mathbf{j}\] \[\because \,\overrightarrow{AB}\,||\overrightarrow{CD}\]. So ,\[\frac{-1}{-2}=\frac{-4}{\lambda -2}\], \[\lambda -2=-8\] or \[\lambda =-6.\]You need to login to perform this action.
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