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If A,A' are the vertices S,S' are t...

If A,A' are the vertices S,S' are the foci and Z,Z' are the feet of the directrices of an ellipse with centre C, then CS CA ,CZ are in

A

A.P

B

G.P

C

H.P

D

none of these

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The correct Answer is:
B
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OBJECTIVE RD SHARMA-ELLIPSE-Exercise
  1. the equation of a diameter conjugate to a diameter y=(b)/(a)x of ...

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  2. if theta and phi are eccentric angles of the ends of a pair of ...

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  3. If A,A' are the vertices S,S' are the foci and Z,Z' are the fe...

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  4. The eccentricity of an ellipse whose pair of a conjugate diameter are ...

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  5. the locus of the point of intersection of tangents to the ellipse...

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  6. The number of maximum normals that can be drawn from any point to an e...

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  7. the sum of the squares of the perpendiculars on any tangent axi...

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  8. If the polar with respect to y^2 = 4ax touches the ellipse x^2/alpha^2...

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  9. If p and q are the segments of a focal chord of an ellipse b^2x^2+a^2y...

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  10. If x/a+y/b=sqrt(2) touches the ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 , the...

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  11. Let P be a point on the ellipse (x^2)/(a^2)+(y^2)/(b^2)=1 of ecc...

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  12. iger P(theta) and Q(pi/2 +theta) are two points on the ellipse x^2/a^2...

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  13. the equation of the circle passing through the foci of the ellip...

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  14. the centre of the ellipse ((x+y-2)^(2))/(9)+((x-y)^(2))/(16)=1 , i...

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  15. In an ellipse, the distances between its foci is 6 and minor axis is 8...

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  16. S and T are foci of an ellipse and B is an end of the minor a...

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  17. the length of the latusrectum of an ellipse is one thrid of its...

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  18. if the major axis of an ellipse is three times the length ...

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  19. the distance between the foci of the ellipse 5x^(2)+9y^(2)=45, is

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  20. the length of the latusrectum of the ellipse (x^(2))/(36)+(y^(2))/...

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