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Vector Algebra question

2019 · 8 Apr · Shift 2 · Q54

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JEE Main
Physics
Vector Algebra
2019 · 8 Apr · Shift 2 · Q54

Vector Algebra question

2019 · 8 Apr · Shift 2 · Q54

JEE MainPhysicsVector AlgebraMCQ+4 / −1

Let

\left| {\mathop {{A_1}}\limits^ \to } \right| = 3

,

\left| {\mathop {{A_2}}\limits^ \to } \right| = 5

and

\left| {\mathop {{A_1}}\limits^ \to + \mathop {{A_2}}\limits^ \to } \right| = 5

. The value of

\left( {2\mathop {{A_1}}\limits^ \to + 3\mathop {{A_2}}\limits^ \to } \right)\left( {3\mathop {{A_1}}\limits^ \to - \mathop {2{A_2}}\limits^ \to } \right)

is :-

A
–118.5
B
–112.5
C
–99.5
D
–106.5

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