Class 12

Math

Algebra

Matrices

Which of the following statements is true?

- Every zero matrix is a square matrix.
- A unit matrix is a diagonal matrix.
- Any non zero matrix is a diagonal matrix.
- none of these

Every zero matrix is not necessarily a square matrix.

A unit matrix is a diagonal matrix whose diagonal elements are all $1$.

Any non zero matrix need not be a diagonal matrix.

Hence, B will be correct answer.