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If OP = 21 and d.c. 's of vec(OP) are (2...

If OP = 21 and d.c. 's of `vec(OP)` are `(2/7, 6/7, -3/7)` then P =

A

(6, -12, 4)

B

(6, 18, -9)

C

(3/2, -6, 2)

D

(5, -10, 6)

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Knowledge Check

  • If the d.c.s of the line joining the oints P(4,3,5) and Q(1,1,k) are (3)/(7),(2)/(7),(6)/(7) then k =

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    B
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    C
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  • If l, m, n are d.c's of vector bar(OP) then maximum value of lmn is

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    B
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    C
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    D
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    A
    Both A and R are true and R is the correct explanation of A.
    B
    Both A and R are true is not correct explanation of A.
    C
    A is true but R is false
    D
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