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Through a point A on the x-axis, a staight line is drawn parallel to the y-axis so as to meet the pair of straight lines `ax^2+2hxy+by^2=0` at B and C. If AB=BC, then

A

`h^2=4ab`

B

`8h^2=9ab`

C

`9h^2=8ab`

D

`4h^2=ab`

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The correct Answer is:
B
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AAKASH SERIES-PAIR OF STRAIGHT LINES-LECTURE SHEET (EXERCISE-I Homogeneous pair of lines) (Straight Objective Type Questions)
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