The centre of the circle given by\[\vec{r}\cdot (\hat{i}+2\hat{j}+2\hat{k})=15\] and \[\left| \vec{r}-(\hat{j}+2\hat{k}) \right|=4\]is

The centre of the circle given by\[\vec{r}\cdot (\hat{i}+2\hat{j}+2\ha

1.	The centre of the circle given by\[\vec{r}\cdot (\hat{i}+2\hat{j}+2\hat{k})=15\] and \[\left\| \vec{r}-(\hat{j}+2\hat{k}) \right\|=4\]is
A.	(0, 1, 2)
B.	(1, 3, 4)
C.	(-1, 3, 4)
D.	none of these
Answer» C. (-1, 3, 4)

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The centre of the circle given by\[\vec{r}\cdot (\hat{i}+2\hat{j}+2\hat{k})=15\] and \[\left| \vec{r}-(\hat{j}+2\hat{k}) \right|=4\]is

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