A) \[\frac{1}{2}\]
B) \[\frac{1}{\sqrt{3}}\]
C) \[\frac{1}{\sqrt{2}}\]
D) \[\frac{2}{3}\]
Correct Answer: C
Solution :
We have \[2ae=13\sqrt{2}=\] focal length ?..[a] \[\because \,2a=26\,\Rightarrow \,a=13\] (By focus - directrix property) \[\therefore \]On putting \[a=13\] in equation [a], we get \[2(13)e=13\sqrt{2}\,\,\Rightarrow \,\,e=\frac{1}{\sqrt{2}}\]You need to login to perform this action.
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