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Conic Section
Question
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
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8/3
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2/3
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5/3
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4/3
Solution
A.
8/3
Major axis is along x-axis.
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Mock Test Series
Mock Test Series