Let the position vectors of the points P and Q be \[4\hat{i}+\hat{j}+\lambda \hat{k}\] and \[2\hat{i}-\hat{j}+\lambda \hat{k}\], respectively. Vector \[\hat{i}-\hat{j}+6\hat{k}\]is perpendicular to the plane containing the origin and the point?s P and Q. then\[\lambda \]equals

Let the position vectors of the points P and Q be \[4\hat{i}+\hat{j}+\

1.	Let the position vectors of the points P and Q be \[4\hat{i}+\hat{j}+\lambda \hat{k}\] and \[2\hat{i}-\hat{j}+\lambda \hat{k}\], respectively. Vector \[\hat{i}-\hat{j}+6\hat{k}\]is perpendicular to the plane containing the origin and the point?s P and Q. then\[\lambda \]equals
A.	\[-\,1/2\]
B.	44228
C.	1
D.	none of these
Answer» B. 44228

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Let the position vectors of the points P and Q be \[4\hat{i}+\hat{j}+\lambda \hat{k}\] and \[2\hat{i}-\hat{j}+\lambda \hat{k}\], respectively. Vector \[\hat{i}-\hat{j}+6\hat{k}\]is perpendicular to the plane containing the origin and the point?s P and Q. then\[\lambda \]equals

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