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Vector Algebra question

2021 · 31 Aug · Shift 1 · Q24

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PYQ Library
JEE Main
Mathematics
Vector Algebra
2021 · 31 Aug · Shift 1 · Q24

Vector Algebra question

2021 · 31 Aug · Shift 1 · Q24

JEE MainMathematicsVector AlgebraMCQ+4 / −1

Let

\overrightarrow a

and

\overrightarrow b

be two vectors such that

\left| {2\overrightarrow a + 3\overrightarrow b } \right| = \left| {3\overrightarrow a + \overrightarrow b } \right|

and the angle between

\overrightarrow a

and

\overrightarrow b

is 60

^\circ

. If

{1 \over 8}\overrightarrow a

is a unit vector, then

\left| {\overrightarrow b } \right|

is equal to :

A
4
B
6
C
5
D
8

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