The subtangent, ordinate and subnormal to the parabola $y^{2} = 4 a x$ at a point (different from the origin) are in

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None of these

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Solution

The correct option is B
GP

$\frac{y}{\frac{d y}{d x}}, y, y \frac{d y}{d x}, \Rightarrow \frac{y}{\frac{4 a}{2 y}}, y, y \times \frac{4 a}{2 y} \Rightarrow \frac{y^{2}}{2 a}, y, 2 a r e i n G P$

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