1
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

For all values of $$\lambda$$, rank of matrix

$$A=\left[\begin{array}{ccc} { }^h C_0 & { }^4 C_3 & { }^5 C_4 \\ \lambda & 8 & 8 \lambda-6 \\ 1+\lambda^2 & 8 \lambda+4 & 2 \lambda+21 \end{array}\right]$$

A
for $$\lambda=2, \rho(A)=1$$
B
for $$\lambda=-1, \rho(A)=1$$
C
for $$\lambda=2, \rho(A)=3$$
D
for $$\lambda=-1, \rho(A)=4$$
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

The area between $$y=x^2$$ and $$y=8-x^2$$

A
32 sq units
B
15/4 sq units
C
11 sq units
D
64/3 sq units
3
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

The roots of the equation $$\cos x+\sqrt{3} \sin x=2 \cos 2 x$$, are

A
$$-2 n \pi+\frac{\pi}{3}, n \in Z$$
B
$$\frac{2 n \pi}{3}+\frac{\pi}{9}, n \in Z$$
C
$$2 n \pi-\frac{\pi}{3}, n \in Z$$
D
$$\frac{2 n \pi}{3}-\frac{\pi}{9}, n \in Z$$
4
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

A force of magnitude $$\sqrt{6}$$ acting along, the line joining points $$A(2,-1,1)$$ and $$B(3,1,2)$$ displaces a particle from $$A$$ to $$B$$. The work done by the force is

A
6
B
6$$\sqrt6$$
C
$$\sqrt6$$
D
12
E
2$$\sqrt6$$
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