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If vec(a)andvec(b)" are parallel vectors...

If `vec(a)andvec(b)" are parallel vectors, then "[vec(a)vec(b)vec(c)]" is equal to "`

A

2

B

-1

C

1

D

0

Text Solution

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The correct Answer is:
d
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Knowledge Check

  • If vec(a),vec(b),vec(c) are three unit vectors such that vec(a) is perpendicular to vec(b) , and is parallel to vec(c) then vec(a)xx(vec(b)xxvec(c)) is equal to

    A
    `vec(a)`
    B
    `vec(b)`
    C
    `vec(c)`
    D
    `vec(0)`

  • If vec(a),vec(b)andvec(c) are any three vectors, then vec(a)xx(vec(b)xxvec(c))=vec(a)xx(vec(b)xxvec(c)) if and only if

    A
    `vec(b),vec(c)` are collinear
    B
    `vec(a)andvec(c)" are collinear "`
    C
    `vec(a)andvec(b)" are collinear "`
    D
    none

  • If vec(A) and vec(B) are two vectors , vec(A) . vec(B) = vec(A) xx vec(B) then resultant vector is :

    A
    A + B
    B
    A - B
    C
    `sqrt(A^(2)+B^(2))`
    D
    `sqrt(A^(2) + B^(2) + sqrt(2)AB)`

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