Class CBSE Class 12 Mathematics Matrices and Determinants Q #1489
KNOWLEDGE BASED
REMEMBER
1 Marks 2026 AISSCE(Board Exam) MCQ SINGLE
A matrix B = $[b_{ij}]_{m \times m}$ is said to be a diagonal matrix, if :
(A) $b_{ij} = 0$, when $i = j$
(B) $b_{ij} = 1$, when $i = j$
(C) $b_{ij} = 1$, when $i \neq j$
(D) $b_{ij} = 0$, when $i \neq j$
Prev Finish
Correct Answer: D

More from this Chapter

MCQ_SINGLE
If \( A = \begin{pmatrix} 7 & 0 & x \\ 0 & 7 & 0 \\ 0 & 0 & y \end{pmatrix} \) is a scalar matrix, then \(y^x\) is equal to
LA
If $A=\begin{bmatrix}1&cot~x\\ -cot~x&1\end{bmatrix}$ show that $A^{\prime}A^{-1}=\begin{bmatrix}-cos~2x&-sin~2x\\ sin~2x&-cos~2x\end{bmatrix}$
MCQ_SINGLE
Given that \(A^{-1}=\frac{1}{7}\begin{bmatrix}2&1\\ -3&2\end{bmatrix}\) matrix A is
MCQ_SINGLE
If for a square matrix A, A^{2}-3A+I=O and A^{-1}=xA+yI, then the value of x+y is:
LA
If $A=\begin{bmatrix}1 & 0 & 2\\ 0 & 2 & 1\\ 2 & 0 & 3\end{bmatrix}$, then show that $A^{3}-6A^{2}+7A+2I=O$
View All Questions