If r 1 and r 2 be the radius of smallest and largest circle which passes through (5, 6)…
Mathematics · JEE Advanced · NTA Exams — Co-ordinate Geometry
If r1 and r2 be the radius of smallest and largest circle which passes through (5, 6) and touches the circle
(x – 2)2 + y2 = 4, then r1r2 is
(x – 2)2 + y2 = 4, then r1r2 is
- \(\frac{4}{41}\)
- \(\frac{41}{4}\)
- \(\frac{5}{41}\)
- \(\frac{41}{6}\)
Answer
(B) 41 4
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- Point M moved on the circle (x – 4) 2 + (y – 8) 2 = 20 . Then it broke away from it and moving along a…
- If P, Q, R are three co-normal points on the parabola y 2 = 4ax then the centroid of the triangle PQR always…
- If the equation, 2x 2 + k xy – 3y 2 – x – 4y – 1 = 0 represents a pair of lines then the value of k can be :
- Two vertices of a triangle are (4, –3) and (–2, 5). If the othocentre of the triangle is at (1, 2), then the…
- The equation 9x 2 – 16y 2 – 18x + 32y – 151 = 0 represents a hyperbola -
- A system of circles is said to be coaxial when every pair of the circles has the same radical axis. It…
- The two parabola y 2 = 4ax and y 2 = 4c (x –b) cannot have a common normal, other than the axis unless, if
- The equations of three lines, AB, CD and EF are, (b – c) x + (c – a) y + (a – b) = 0, (c – a) x + (a – b) y +…
More Co-ordinate Geometry questions · Browse all practice questions