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B is extermity of the minor axis of an e...

B is extermity of the minor axis of an elipse whose foci are S and S'. If `angle SBS'` is a right angle, then the eccfentricity of the ellipse is

A

`1/2`

B

`(1)/(sqrt2)`

C

`2/3`

D

`1/3`

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The correct Answer is:
B
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