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Let S be a subset of the plane defined b...

Let S be a subset of the plane defined by:`S={(x,y):|x|+2|y|=1}` Then the radius of the smallest circle with centre at the origin and having non-empty intersection with S is

A

`1/5`

B

`1/sqrt5`

C

`1/2`

D

`2/sqrt5`

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KVPY PREVIOUS YEAR-SOLVED PAPER 2019-EXAMPLE
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