Vector has components and vector has components in Cartesian coordinates

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

Vector

\mathbf{M}

has components

(5,\,k)

and vector

\mathbf{N}

has components

(k,\,5)

in Cartesian coordinates. If the magnitude of

\mathbf{M}+\mathbf{N}

is equal to the magnitude of

\mathbf{M}-\mathbf{N}

, the value of

k

is (a)

-5

(b)

10

(c)

0

(d)

5