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A focus of an ellipse is at the origin. ...

A focus of an ellipse is at the origin. The directrix is the line x = 4 and the eccentricity is `1/2`. Then the length of the semi - major axis is

A

`2/3`

B

`4/3`

C

`5/3`

D

`8/3`

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DIPTI PUBLICATION ( AP EAMET)-ELLIPSE-EXERCISE 1A
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  12. The eccentricity of the ellipse 9x^(2)+5y^(2)-30y=0 is

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  18. The major axis of an ellipse is three times the minor axis, then the e...

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