JEE Advanced 2011 Mathematics question

The circle passing through the point (−1, 0) and touching the y-axis at (0, 2) also passes through the point

Answer: (D)

Solution

A circle touching the y-axis at (0, 2) has centre (h, 2) and radius |h|. Passing through (−1, 0): . Circle: , i.e. $ +

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Question ID VK-025987