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The locus of the midpoint of the segment...

The locus of the midpoint of the segment joining the focus to a moving point on the parabola `y^2=4a x` is another parabola with directrix (a) `y=0` (b) `x=-a` (c) `x=0` (d) none of these

A

x = 0

B

x = -a/2

C

x = -a

D

x = a/2

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The correct Answer is:
A
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