1
KCET 2025
MCQ (Single Correct Answer)
+1
-0
If $A=\left[\begin{array}{ll}k & 2 \\ 2 & k\end{array}\right]$ and $\left|A^3\right|=125$, then the value of $k$ is
2
KCET 2025
MCQ (Single Correct Answer)
+1
-0
If $A$ is a square matrix satisfying the equation $A^2-5 A+7 I=0$, where $I$ is the $I$ dentity matrix and 0 is null matrix of same order, then $A^{-1}=$
3
KCET 2025
MCQ (Single Correct Answer)
+1
-0
If $A$ is a square matrix of order $3 \times 3, \operatorname{det} A=3$, then the value of $\operatorname{det}\left(3 A^{-1}\right)$ is
4
KCET 2025
MCQ (Single Correct Answer)
+1
-0
If $B=\left[\begin{array}{ll}1 & 3 \\ 1 & \alpha\end{array}\right]$ be the adjoint of a matrix $A$ and $|A|=2$, then the value of $\alpha$ is
Questions Asked from Matrices and Determinants (MCQ (Single Correct Answer))
Number in Brackets after Paper Indicates No. of Questions
KCET Subjects
Physics
Mechanics
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