Generate Quiz 686BBE03DC31A

1 / 10

If eccentricity of ellipse becomes zero, then it takes the form of:

A parabola

Hyperbola

Circle

Ellipse

2 / 10

The lines represented by ax² + 2hxy + by² = 0 are orthogonal if:

a – b = 0

h^2 – ab = 0

a + b = 0

a = -1

3 / 10

If a line is bisecting quadrant I and quadrant III then slope of line

0

1

-1

None of these

4 / 10

A

B

C

D

5 / 10

A

B

C

D

6 / 10

If rate of change circumference is 6m/s then rate of change of radius is

4/pi

2/pi

3/pi

6/pi

7 / 10

A

B

C

D

8 / 10

The equation of the circle of radius 3 that lies in the fourth quadrant and touching the lines x=0 and y=0 is

x²+y²-6x-6y+9=0

x²+y²-6x+6y+9=0

x² + y² +6x-6y+9=0

x²+y²+6x+6y+9=0

9 / 10

The equation of the directrix of the parabola y²+4y+4x+2=0 is:

x=-1

x=1

x =-3/2

x=3/2

10 / 10

for any two vectors a and b making an angle θ between them, then ab=0, if and only if

a⊥b

θ=π/2

either a=0 or b=0

All of these

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