Most Important Selected Qs for JEE AdvancedMathematicsEllipse
The ends of the major axis of ellipse are (-2,4) and (2,1) . If the point (1,3) lies on the ellipse. Then:
Options
- AThe length of major axis is equal to 10 .
- BThe length of minor axis is equal to 10 24 .
- CThe length of latus rectum of ellipse is 5 6 .
- DSquare of the distance between the focii of ellipse is 125 6 .
Correct answer
D. Square of the distance between the focii of ellipse is 125 6 .
Step-by-step solution
aligned & 2 a= 16+9 =5 & C (0, 5 2 ) & F₁ [2 e, 5 2 (5-3 e) ] & F₂ [-2 e, 1 2 (5+3 e) ] aligned aligned & P F₁+P F₂=2 a & e^2= 5 6 e= 5 6 & aligned b^2= 25 4 , now verify all the options.