If \( C \) is a circle described on the focal chord of the parabola \( y^{2}=4 x \) as diameter ....

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If \( C \) is a circle described on the focal chord of the parabola \( y^{2}=4 x \) as diameter which is inclined at an
\( \mathrm{P} \)
angle of \( 45^{\circ} \) with the axis, then the-
(1) radius of the circle is 2
(2) the centre of the circle is \( (3,2) \)
(3) the line \( \mathrm{x}+1=0 \) touches the circle
(4) the circle \( x^{2}+y^{2}+2 x-6 y+3=0 \) is orthogonal to \( C \)



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