IIT JEE Advanced 2012 Paper 2

Paragraph Type
This section contains 3 paragraphs. Based on each paragraph, there are 2 questions. Each question has 4 choices (A), (B), (C) and (D) out of which ONLY ONE is correct.
Paragraph for Questions 49 and 50:
A tangent PT is drawn to the circle x2+y2 = 4 at the point P( 3, 1). A straight line L, perpendicularto PT is a tangent to the circle (x–3)2+y2 = 1.