Let a and b be two vectors, Let |a|=1,|b|=4 and a · b=2. If c=(2 a × b)-3 b, then the value of b · c is:

Vector Algebra: JEE Main 2023 Mathematics question

JEE Main 2023 · 30 Jan, Evening shift · Q5832

JEE Main 202330 Jan, Evening shiftMathematicsEasyVector Algebra184× since 2002

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 :

JEE Main 2023 · 30 Jan, Evening shift · Q5832

JEE Main 202330 Jan, Evening shiftMathematicsEasyVector Algebra184× since 2002

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 :