The line \[lx+my+n=0\] will touch the parabola \[{{y}^{2}}=4ax\], if [RPET 1988; MNR 1977; MP PET 2003]

The line \[lx+my+n=0\] will touch the parabola \[{{y}^{2}}=4ax\], if [

1.	The line \[lx+my+n=0\] will touch the parabola \[{{y}^{2}}=4ax\], if [RPET 1988; MNR 1977; MP PET 2003]
A.	\[mn=a{{l}^{2}}\]
B.	\[lm=a{{n}^{2}}\]
C.	\[ln=a{{m}^{2}}\]
D.	\[mn=al\]
Answer» D. \[mn=al\]

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The line \[lx+my+n=0\] will touch the parabola \[{{y}^{2}}=4ax\], if [RPET 1988; MNR 1977; MP PET 2003]

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