Length of the focal chord of the parabola `(y +3)^(2) = -8(x-1)` which lies at a distance 2 units from the vertex of the parabola isA. 8B. `6sqrt(2)`C. 9D. `5sqrt(3)`

Length of the focal chord of the parabola `(y +3)^(2) = -8(x-1)` which

1.	Length of the focal chord of the parabola `(y +3)^(2) = -8(x-1)` which lies at a distance 2 units from the vertex of the parabola isA. 8B. `6sqrt(2)`C. 9D. `5sqrt(3)`
Answer» Correct Answer - A Lengths are invariant under change of axes. Consider `y^(2) = 8x`. Focus is (2,0). So, focal chord at distance "2" than vertex is latus rectum which has length "8".

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Length of the focal chord of the parabola `(y +3)^(2) = -8(x-1)` which lies at a distance 2 units from the vertex of the parabola isA. 8B. `6sqrt(2)`C. 9D. `5sqrt(3)`

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