The condition for the line l x+m y+n=0 to be a normal to \frac{x^2}{25}+\frac{y^2}{9}=1 is

Correct Answer is : 9m2+25l2=256n2

\frac{l^2}{9}+\frac{m^2}{25}=\frac{n^2}{256}

\frac{9}{m^2}+\frac{25}{l^2}=\frac{256}{n^2}

\frac{p^2}{9}-\frac{m^2}{25}=\frac{n^2}{256}

CGPET 2014 Solved Paper

Section: Mathematics

Question : 124 of 150

Marks: +1, -0

The condition for the line lx+my+n=0 to be a normal to ‌

+‌

=1 is

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