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NTA Abhyas JEE Main2020MathematicsCirclePractice

Lines L 1 & L 2 are rotating in an anticlockwise direction about the points A – 2 , 0 and B 2 , 0 respectively in such a way that the speed of angle of rotation of line L 2 is double as that of L 1 . Initially equations of both lines are y = 0 . If the angle of rotation of line L 2 varies between 0 to π 2 , then the locus of the point of intersection P of lines L 1 & L 2 is part of a circle whose radius is equal to

Options

  1. A2 units
  2. B4 units
  3. C6 units
  4. D8 units

Correct answer

B. 4 units

Step-by-step solution

Locus of P is part of circle whose center is 2 , 0 & radius is equal to 4 units

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