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The length of the major axis of the ellipse $\large\frac{x^2}{a^2}+\frac{y^2}{b^2}$$=1$ is 2 times the length of minor axis its eccentricity is :

$\begin{array}{1 1}(a)\;\large\frac{\sqrt 2}{3}\\(b)\;\large\frac{\sqrt 3}{2}\\(c)\;\large\frac{\sqrt 5}{3}\\(d)\;\text{None of these}\end{array}$

1 Answer

Length of major axis =2a
Length of minor axis =2b
We know
$e=\large\frac{\sqrt 3}{2}$
Hence (b) is the correct answer.
answered Feb 7, 2014 by sreemathi.v
edited Sep 23, 2014 by sharmaaparna1

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