The position vectors of two points P and Q are \[3\mathbf{i}+\mathbf{j}+2\mathbf{k}\] and \[\mathbf{i}-2\mathbf{j}-4\mathbf{k}\] respectively. The equation of the plane through Q and perpendicular to PQ is

\[\mathbf{r}.(2\mathbf{i}+3\mathbf{j}+6\mathbf{k})=28\]

\[\mathbf{r}.(2\mathbf{i}+3\mathbf{j}+6\mathbf{k})=32\]

\[\mathbf{r}.(2\mathbf{i}+3\mathbf{j}+6\mathbf{k})+28=0\]

The position vectors of two points P and Q are \[3\mathbf{i}+\mathbf{j

1.	The position vectors of two points P and Q are \[3\mathbf{i}+\mathbf{j}+2\mathbf{k}\] and \[\mathbf{i}-2\mathbf{j}-4\mathbf{k}\] respectively. The equation of the plane through Q and perpendicular to PQ is
A.	\[\mathbf{r}.(2\mathbf{i}+3\mathbf{j}+6\mathbf{k})=28\]
B.	\[\mathbf{r}.(2\mathbf{i}+3\mathbf{j}+6\mathbf{k})=32\]
C.	\[\mathbf{r}.(2\mathbf{i}+3\mathbf{j}+6\mathbf{k})+28=0\]
D.	None of these
Answer» D. None of these

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The position vectors of two points P and Q are \[3\mathbf{i}+\mathbf{j}+2\mathbf{k}\] and \[\mathbf{i}-2\mathbf{j}-4\mathbf{k}\] respectively. The equation of the plane through Q and perpendicular to PQ is

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