Let $P$ is a point on hyperbola $x^2 -y^2 = 4$ , which is at minimum distance from $(0,-1)$ then distance of $P$ from $x-$ axis is
Let $P$ is a point on hyperbola $x^2 -y^2 = 4$ , which is at minimum distance from $(0,-1)$ then distance of $P$ from $x-$ axis is
- A
$0$
- B
$\frac{1}{2}$
- C
$1$
- D
$\sqrt 2 $
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- [JEE MAIN 2021]
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