JEE Math Practice Question
A plane passes through the points A(1, 2, 3), B(2, 3, 1) and C(2, 4, 2). If O is the origin and P is (2, $$-$$1, 1), then the projection of $$\overrightarrow {OP} $$ on this plane is of length :
- A.$$\sqrt {{2 \over 7}} $$
- B.$$\sqrt {{2 \over 5}} $$
- C.$$\sqrt {{2 \over 3}} $$
- D.$$\sqrt {{2 \over 11}} $$
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