A) \[\frac{4}{3}\]
B) \[\frac{5}{3}\]
C) \[\frac{8}{3}\]
D) \[\frac{2}{3}\]
Correct Answer: C
Solution :
Perpendicular distance from focus on directrix\[=\frac{\left| 0-4 \right|}{\sqrt{1}}=\frac{a}{e}-ae\Rightarrow 4=2a-\frac{a}{2}\]\[\Rightarrow 4=\frac{3a}{2}\Rightarrow a=\frac{8}{3}\]You need to login to perform this action.
You will be redirected in
3 sec