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The equatio (x ^(2 ))/( 2 -r) + (y ^(2))...

The equatio `(x ^(2 ))/( 2 -r) + (y ^(2))/(r -5) +1=0` represents an ellipse, if

A

` r gt 2`

B

`2 lt r lt 5`

C

`r gt 5`

D

None of these

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The correct Answer is:
B
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TARGET PUBLICATION-CIRCLE AND CONICS -CRITICAL THINKING
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