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If (t,0) is point on diameter of circle ...

If (t,0) is point on diameter of circle `x ^(2) + y ^(2) =4,` then the equation `x ^(2) - 4x - t ^(2)=0` has

A

distinct roots greater than 1

B

exactly one real root in `(-1,0)`

C

both roots greater than 2

D

none of these

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The correct Answer is:
B
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