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Question

An ellipse with centre at (0,0) cuts x axis at (3,0) and (-3,0). If its e=12 then the length of the Semiminor axis is


  1. 3√3/2


Solution

The correct option is D

3√3/2


C(0,0), A=(±3,0), a=3, e=12

b2 = a2(1e2) = 9(114) = 9×34 = 274, b = 332

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