Question 1 :
Find the value of a if $y^2=4ax $ pases through $(8,8)$
Question 2 :
What is the radius of the circle with the following equation?<br>$\displaystyle x^{2}-6x+y^{2}-4y-12=0$<br>
Question 3 :
Assertion: If the equation of a circle is $(x+1)^2+(y-1)^2=4$, then its radius is 4.
Reason: Equation of a circle with radius r is given by, $(x-a)^2 + (y-b)^2=r^2$.
Question 4 :
The equation of the circle passing through $(3, 6)$ and whose centre is $(2, -1)$ is
Question 7 :
The radius of the circle with center (0,0) and which passes through (-6,8) is
Question 8 :
If the vertices of a triangle are $(2, -2), (-1, -1)$ and $(5, 2)$ then the equation of its circumcircle is?
Question 9 :
The circle with radius $1$ and centre being foot of the perpendicular from $(5, 4)$ on y-axis, is?
Question 11 :
The equation ${ x }^{ 2 }+{ y }^{ 2 }=9$ meets x-axis at 
Question 12 :
Equation of the circle with centre on y-axis and passing through the points $(1,0),(1,1)$ is:
Question 14 :
The vertex of the parabola $y^2 - 4y - x + 3 = 0$ is
Question 15 :
The length of the latus rectum of the parabola $169 \left[(x-1)^2+(y-3)^2\right]=(5x-12y+17)^2$ is:
Question 16 :
The length of the latus rectum of the parabola whose vertex is $(2, -3)$ and the directrix $x = 4$ is
Question 17 :
The arrangement of the following parabolas in the ascending order of their length of latusrectum <br/>A)   $y=4x^{2}+x+1$     B) $2y=x^{2}+x+5$<br/>C)   $x=2y^{2}+y+3$     D) $y^{2}+x+y+9=0$<br/>
Question 18 :
Find the equation of the circle that passes through the points $(0,6),(0,0)$ and $(8,0)$
Question 19 :
Assertion: The length of latus rectum of the parabola $\displaystyle \left ( 3x - 4y + 2 \right )^{2} = 40\left ( 4x + 3y - 5 \right )$ is $\displaystyle 16$.
Reason: The length of latus rectum of the parabola $\displaystyle \left ( y - 2 \right )^{2} = 16 \left ( x + 3 \right )$ is $\displaystyle 16$.
Question 20 :
The set of points $(x, y)$ whose distance from the line $y = 2x + 2$ is the same as the distance from $(2, 0)$ is a parabola. This parabola is congruent to the parabola in standard form $y = Kx^{2}$ for some $K$ which is equal to