1.

If the line px + qy =1 is a tangent to the parabola `y^(2)` =4ax, thenA. `p^(2)-aq=0`B. `p+aq^(2)=0`C. `p-aq^(2)=0`D. `p-2aq^(2)=0`

Answer» Correct Answer - 2
`px+qy-1=0`
`qy=px+1`
`y=(-p)/(q)x+1/q`
`Y^(2)=4ax`
C.T
`c=a//m`
`1/q=a//-p//q`
`p=-aq^(2)`
`p+aq^(2)=0`


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