Download App

MATRICES — MATHS STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceMATHSMATRICES1 Mark
Question
The matrix $\text{A}=\begin{bmatrix}0&0&4\\0&4&0\\4&0&0\end{bmatrix}$ is a:
  1. Square matrix.
  2. Diagonal matrix.
  3. Unit matrix.
  4. None of these.
✓

Answer

  1. Square matrix.
Solution:
Given: $\text{A}=\begin{bmatrix}0&0&4\\0&4&0\\4&0&0\end{bmatrix}$
Since, number of rows is equal to number of columns.
Therefore, A is a square matrix.
Hence, the correct option is (a).

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from MATRICES→MATRICES — all question types→MATHS STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

If x > 1, then $2\tan^{-1}\text{x}+\sin^{-1}\Big(\frac{2\text{x}}{1+\text{x}^2}\Big)$ is equal to:
  1. $4\tan^{-1}\text{x}$
  2. $0$
  3. $\frac{\pi}{2}$
  4. $\pi$
→
The principal solution of $\sin ^{-1}\left(\sin \left(\frac{5 \pi}{3}\right)\right)$ is
→
If the direction ratios of two lines are given by 3lm - 4ln + mn = 0 and l + 2m + 3n = 0, then the angle between the lines is:
→
Which of the following is not a vector quantity:
  1. Speed
  2. Density
  3. Force
  4. Velocity
→
An urn contains 9 balls two of which are red, three blue and four black. Three balls are drawn at random. The probability that they are of the same colour is,
  1. $\frac{5}{84}$
  2. $\frac{3}{9}$
  3. $\frac{3}{7}$
  4. $\frac{7}{17}$
→
The function $\text{f}(\text{x})=\log_\text{e}\Big(\text{x}^3+\sqrt{\text{x}^6+1}\Big)$ is of the following type:
  1. Even and increasing.
  2. Odd and increasing.
  3. Even and decreasing.
  4. Odd and decreasing.
→
The solution of the differential equation $dy = (1 + y^2) dx$ is:
→
The derivative of the function $\cot^{-1}\Big|(\cos2\text{x})^{\frac{1}{2}}\Big|\text{ at }\text{x}=\frac{\pi}{6}$ is:
  1. $\Big(\frac{2}{3}\Big)^\frac{1}{2}$
  2. $\Big(\frac{1}{3}\Big)^\frac{1}{2}$
  3. $3^\frac{1}{2}$
  4. $6^\frac{1}{2}$
→
Consider the vectors $\vec{a}=\hat{i}-2 \hat{j}+\hat{k}$ and $b =4 \hat{i}-4 \hat{j}+7 \hat{k}$ What is the scalar projection of $f \vec{a}$ on $\vec{b} ?$
→
If $\text{f}(\text{x})=\sqrt{\text{x}^2+6\text{x}+9},$ then f'(x) is equal to:
  1. 1 for x < -3
  2. -1 for x < -3
  3. 1 for all $\text{x}\in\text{R}$
  4. None of these.
→