A) 13/12
B) 2
C) 13/6
D) 13/8
Correct Answer: A
Solution :
Here, \[2b=5\]and \[2ae=13\] \[\because \]\[{{b}^{2}}={{a}^{2}}({{e}^{2}}-1)\] \[\Rightarrow \]\[\frac{25}{4}=\frac{169}{4}-{{a}^{2}}\] \[\Rightarrow \]\[{{a}^{2}}=\frac{144}{4}=36\Rightarrow a=6\] \[\therefore \]\[e=\frac{13}{12}\]
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