A) -1
B) 2
C) -2
D) 1
Correct Answer: A
Solution :
One of the point on line is \[P\left( 0,1,1 \right)\] and given point is \[Q\left( \beta ,0,\beta \right).\] So, \[\overrightarrow{PQ}=\beta \hat{i}-\hat{j}+(\beta +1)\hat{k}\] Hence, \[{{\beta }^{2}}+1+{{(\beta +1)}^{2}}-\frac{{{\left( \beta -\beta -1 \right)}^{2}}}{2}=\frac{3}{2}\] \[\Rightarrow 2{{\beta }^{2}}+2\beta =0\]\[\Rightarrow \beta =0,-1\] \[\Rightarrow \beta =-1\](as\[\beta \ne 0\])You need to login to perform this action.
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