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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

`a gt 2`

B

`a gt 5`

C

`2 lt a lt 5`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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