+91-8076753736 support@wiredfaculty.com

Sponsor Area

Conic Section

Question

Wired Faculty App

In an ellipse, the distance between its foci is 6 and minor axis is 8. Then its eccentricity is

3/5

1/5

2/5

4/5

Solution

A.

3/5

2ae = 6 ⇒ ae = 3
2b = 8 ⇒ b = 4
b²= a²(1 − e²)
16 = a2 − a²e²
a²= 16 + 9 = 25
a = 5
∴e = 3/a = 3/5

Some More Questions From Conic Section Chapter

In an ellipse, the distance between its foci is 6 and minor axis is 8. Then its eccentricity is

If the lines 3x − 4y − 7 = 0 and 2x − 3y − 5 = 0 are two diameters of a circle of area 49π square units, the equation of the circle is

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation