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

The domain of $$f(x)=\sqrt{\log \frac{1}{4}\left(\frac{5 x-x^2}{4}\right)}+{ }^{10} C_x$$ is

A
$$(0,1] \cup[4,5)$$
B
$$(0,5)$$
C
$$\{1,4\}$$
D
None of these
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Through a fixed point $$P(\alpha, \beta), a$$, variable line is drawn to cut the coordinate axes at $$A$$ and $$B$$. The locus of the mid-point of $$A B$$ is

A
a hyperbola with eccentricity 2
B
a hyperbola with centre $$\left(\frac{\alpha}{2}, \frac{\beta}{2}\right)$$
C
a hyperbola with asymptotes along axes
D
not a hyperbola
3
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

If a man running around a race-course notes that the sum of the distances of two flag-posts from him is always $$10 \mathrm{~m}$$ and the distance between the flag-posts is $$8 \mathrm{~m}$$, then the area of the path he encloses in square metres is

A
12$$\pi$$
B
13$$\pi$$
C
14$$\pi$$
D
15$$\pi$$
4
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

If a circle of constant radius '$$r$$' passes through the origin and meets the coordinate axes at points $$A$$ and $$B$$ respectively, then the locus of the centroid of triangle $$O A B$$, '$$O$$' being the origin, is

A
$$x^2+y^2=\frac{4}{9} r^2$$
B
$$x^2+y^2=\frac{9}{4} r^2$$
C
$$x^2+y^2=\frac{2}{3} r^2$$
D
$$x^2+y^2=\frac{3}{2} r^2$$
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