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

JEE Mains Model Paper 9

Question : 71 of 90

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A focus of an ellipse is at the origin. The directrix is the line x = 4 and the eccentricity is

. Then the length of the semi - major axis is

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