If the polar of P with respect to the circle x2+y2=a2 touches the parabola y2=4ax, then the locus of P is

1.  y2+2ax=0

2.  y2+3ax=0

3.  y2+ax=0

4.  2y2+ax=0

4

y2+ax=0

Explanation :
No Explanation available for this question

Locus of the poles of focal chords of a parabola is ___________ of the parabola

1.  The axis

2.  a focal chord

3.  the directrix

4.  the tangent at the vertex

4

the directrix

Explanation :
No Explanation available for this question

PSQ is a focal chord of the parabola y2=16x. If P=(1,4) then SP/SQ=

1.  3/4

2.  2/3

3.  1/9

4.  1/4

4

1/4

Explanation :
No Explanation available for this question

Equation of the ellipse with verticesfociis

1.  (x2/25)+(y2/9)=1

2.  (x2/32)+(y2/16)=1

3.  (x2/25)+(y2/7)=1

4.  (x2/25)+(y2/12)=1

4

(x2/25)+(y2/9)=1

Explanation :
No Explanation available for this question

The value of k if (1,2), (k,-1) are conjugate points with respect to the ellipse 2x2+3y2=6 is

1.  2

2.  4

3.  6

4.  8

4

6

Explanation :
No Explanation available for this question

The eccentricity o the ellipse 9x2+16y2=576 is

1.  √7/2

2.  √5/2

3.  7/12

4.  √7/4

4

√7/4

Explanation :
No Explanation available for this question

The eccentricity of the ellipse whose major axes is double the minor axes

1.  1/2

2.  1/√2

3.  1/3

4.  √3/2

4

√3/2

Explanation :
No Explanation available for this question

One focus of an ellipse is (1,0) with centre (0,0). If the length of major axes is 6 its e=

1.  1/4

2.  2/3

3.  1/3

4.  1/2

4

1/3

Explanation :
No Explanation available for this question

The eccentricity of the ellipse 25x2+9y2-150x-90y+225=0 is

1.  3/5

2.  4/5

3.  2/3

4.  1/3

4

4/5

Explanation :
No Explanation available for this question

1.  2/3

2.  3/4

3.  4/5

4.  1/2

4