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Vector Algebra question

2010 · Shift 0 · Q49

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PYQ Library
JEE Main
Mathematics
Vector Algebra
2010 · Shift 0 · Q49

Vector Algebra question

2010 · Shift 0 · Q49

JEE MainMathematicsVector AlgebraMCQ+4 / −1

If the vectors

\overrightarrow a = \widehat i - \widehat j + 2\widehat k,\,\,\,\,\,\overrightarrow b = 2\widehat i + 4\widehat j + \widehat k\,\,\,

and

\,\overrightarrow c = \lambda \widehat i + \widehat j + \mu \widehat k

are mutually orthogonal, then

\,\left( {\lambda ,\mu } \right)

is equal to :

A
$(2, -3)$
B
$(-2, 3)$
C
$(3, -2)$
D
$(-3, 2)$

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