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MathsHardMCQ2021 Β· 25 Jul Shift 1

Q65.Let an ellipse 𝐸: π‘₯2 + 𝑦2 = 1, π‘Ž2 > 𝑏2, passes through 3 1 and has eccentricity 1 If a circle, centered at √ 2, √3. π‘Ž2 𝑏2 2 focus 𝐹( 𝛼, 0 ) , 𝛼> 0, of 𝐸 and radius √3, intersects 𝐸 at two points 𝑃 and 𝑄, then 𝑃𝑄2 is equal to : (1) 8 (2) 4 3 3 16 (3) (4) 3 3

What This Question Tests

This question involves finding the equation of an ellipse from given points and eccentricity, determining the focus, and then finding the intersection points of the ellipse with a circle centered at the focus to calculate the distance PQ.

Concepts Tested

Standard equation of ellipseEccentricity of ellipseFoci of ellipseIntersection of circle and ellipseDistance formula

Formulas Used

x^2/a^2 + y^2/b^2 = 1

b^2 = a^2(1-e^2)

Focus = (ae, 0)

Distance formula

πŸ“š NCERT Sections This Tests

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