Question

Out of the given matrices, choose that matrix which is a scalar matrix: 

Options

• \[\begin{bmatrix}0 & 0 \\ 0 & 0\end{bmatrix}\]

•  \[\begin{bmatrix}0 & 0 & 0 \\ 0 & 0 & 0\end{bmatrix}\] 

•  \[\begin{bmatrix}0 & 0 \\ 0 & 0 \\ 0 & 0\end{bmatrix}\] 

• \[\begin{bmatrix}0 \\ 0 \\ 0\end{bmatrix}\]

Answer 1

`[[0    0],[ 0    0]]`

A diagonal matrix in which all the diagonal elements are equal is called the scalar matrix.