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$A B is a chord of the parabola y^{2} = 4 a x with vertex A \cdot B C is drawn perpendicular to A B meeting the axis at C . The$
$projection of B C on the axis of the parabola is$

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detailed solution

Correct option is C

tan⁡θ=yx The projection of BC on the x -axis, LC=ytan⁡90∘−θ=ytan⁡θ=y2x=4a

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AB is a chord of the parabola y2=4ax with vertex A⋅BC is drawn perpendicular to AB meeting the axis at C . The projection of BC on the axis of the parabola is

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$A B is a chord of the parabola y^{2} = 4 a x with vertex A \cdot B C is drawn perpendicular to A B meeting the axis at C . The$
$projection of B C on the axis of the parabola is$