Question

If the foci and vertices of an ellipse be (±1, 0) and (±2, 0), then the minor axis of the ellipse is

• A. 2$\sqrt{5}$
• B. 2
• C. 4
• D. 2$\sqrt{3}$

Answer 1

Answer: (D)

2$\sqrt{3}$

Answer 2

ae = 1, a = 2, e = $\frac{1}{2}$⇒ b = $\sqrt{4\left( 1 - \frac{1}{4} \right)} = \sqrt{3}$

Hence minor axis = 2$\sqrt{3}$.