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Let PQ be a focal chord of the parabola `y^2 = 4ax` The tangents to the parabola at P and Q meet at a point lying on the line `y = 2x + a, a > 0`. Length of chord PQ is

A

7a

B

5a

C

2a

D

3a

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The correct Answer is:
B
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MOTION-PARABOLA-EXERCISE - IV
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