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Question

The equation of circle is x2+y22x=0. The point P(1,0) lies

A
On the circle
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B
Inside the circle
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C
Outside the circle
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D
On the centre of the circel
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Solution

The correct option is C Outside the circle
x2+y22x=0 Radius (x1)2+y2=1
Radius =1 center (1,0)
Pt(1,0)(1)2+0+2(1)
=1+2=3 (hence not on circle)
OP=(1+1)2+0=2 OP> radius
P will lie outside the circle

1126185_460586_ans_1d85e15c18d94b84b50fe825774f2790.JPG

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