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The eccentricity of an ellipse whose centre is at the origin is . 2 1 If one of its directrices is x = – 4, then the equation of the normal to it at ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ 2 3 , 1 is :

1. 4x – 2y = 1
2. 4x + 2y = 7
3. x + 2y = 4
4. 2y – x = 2 Students may find similar question in CP exercise sheet : [ JEE Main, Chapter : Ellipse, Page 58, Ex. 3, Q. No. 3 ] [ JEE Advance, Chapter : Ellipse, Page 24, Ex. 3, Q. No. 13 ]

Correct answer: 4x – 2y = 1

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