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Vector Algebra question

2002 · Shift 0 · Q92

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PYQ Library
JEE Main
Mathematics
Vector Algebra
2002 · Shift 0 · Q92

Vector Algebra question

2002 · Shift 0 · Q92

JEE MainMathematicsVector AlgebraMCQ+4 / −1

\overrightarrow a = 3\widehat i - 5\widehat j

and

\overrightarrow b = 6\widehat i + 3\widehat j

are two vectors and

\overrightarrow c

is a vector such that

\overrightarrow c = \overrightarrow a \times \overrightarrow b

then

\left| {\overrightarrow a } \right|:\left| {\overrightarrow b } \right|:\left| {\overrightarrow c } \right|

=

A
$\sqrt {34} :\sqrt {45} :\sqrt {39}$
B
$\sqrt {34} :\sqrt {45} :39$
C
$34:39:45$
D
$\,39:35:34$

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