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

Correct Answer is : 9m2+25R2=256n2

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

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

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

Manipal Entrance Test 2020 Math Paper

Question : 16 of 70

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

+‌

=1 is

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