CUET · MATHS · PYQ PAPER 2025
The matrix \(\left[\begin{array}{lll}0 & 0 & 0 \\ 0 & 0 & 0 \\ 0 & 0 & 0\end{array}\right]\) is a
(A) Null matrix
(B) Unit matrix
(C) Symmetric matrix
(D) Skew-symmetric matrix
Choose the correct answer from the options given below:
- A (A), (B) and (D) only
- B (A), (B) and (C) only
- C (A), (C) and (D) only
- D (C) and (D) only
Answer & Solution
Correct Answer
(C) (A), (C) and (D) only
Step-by-step Solution
Detailed explanation
Null matrix: All elements are \(0\). True. Unit matrix: Not all diagonal elements are \(1\). False. Symmetric matrix: \( A^T = A \). True. Skew-symmetric matrix: \( A^T = -A \). True. Correct properties are (A), (C), (D). (A), (C) and (D) only
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