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Vector Algebra question

2023 · 30 Jan · Shift 2 · Q32

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PYQ Library
JEE Main
Mathematics
Vector Algebra
2023 · 30 Jan · Shift 2 · Q32

Vector Algebra question

2023 · 30 Jan · Shift 2 · Q32

JEE MainMathematicsVector AlgebraMCQ+4 / −1

Let

\vec{a}

and

\vec{b}

be two vectors, Let

|\vec{a}|=1,|\vec{b}|=4

and

\vec{a} \cdot \vec{b}=2

. If

\vec{c}=(2 \vec{a} \times \vec{b})-3 \vec{b}

, then the value of

\vec{b} \cdot \vec{c}

is :

A
$-48$
B
$-60$
C
$-84$
D
$-24$

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