Calculating distance b.w P and O (0,0) = (2)^1/2
Now, distance b/w Q and O(0,0) = Same as above.
So, by distance formula =
( S^2-1^2)^1/2 = (2)^1/2
Solving it
S^2 = 3
S = (3)^1/2
So, IMO D.
OA Pls
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