Conic Sections Question 209
Question: If the foci and vertices of an ellipse be $ (\pm 1,\ 0) $ and $ (\pm 2,\ 0) $ , then the minor axis of the ellipse is
Options:
A) $ 2\sqrt{5} $
B) 2
C) 4
D) $ 2\sqrt{3} $
Show Answer
Answer:
Correct Answer: D
Solution:
$ ae=1 $ , $ a=2 $ , $ e=\frac{1}{2} $
therefore $ b=\sqrt{4( 1-\frac{1}{4} )}=\sqrt{3} $
Hence minor axis $ =2\sqrt{3} $ .
BETA
