If \[A=\left[ \begin{matrix} \lambda & 1 \\ -1 & -\lambda \\ \end{matrix} \right]\], then for what value of \[\lambda ,\,{{A}^{2}}=O\] [MP PET 1992]

If \[A=\left[ \begin{matrix} \lambda & 1 \\ -1 & -\lambd

1.	If \[A=\left[ \begin{matrix} \lambda & 1 \\ -1 & -\lambda \\ \end{matrix} \right]\], then for what value of \[\lambda ,\,{{A}^{2}}=O\] [MP PET 1992]
A.	0
B.	\[\pm \text{ }1\]
C.	-1
D.	1
Answer» C. -1

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If \[A=\left[ \begin{matrix} \lambda & 1 \\ -1 & -\lambda \\ \end{matrix} \right]\], then for what value of \[\lambda ,\,{{A}^{2}}=O\] [MP PET 1992]

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