Arts (English Medium) Class 11 - CBSE Question Bank Solutions

Find the equation of the circle which passes through (3, −2), (−2, 0) and has its centre on the line 2x − y = 3.

Find the equation of the circle which passes through the points (3, 7), (5, 5) and has its centre on the line x − 4y = 1.

Show that the points (3, −2), (1, 0), (−1, −2) and (1, −4) are concyclic.

Show that the points (5, 5), (6, 4), (−2, 4) and (7, 1) all lie on a circle, and find its equation, centre and radius.

Prove that the centres of the three circles x² + y² − 4x − 6y − 12 = 0, x² + y² + 2x + 4y − 10 = 0 and x² + y² − 10x − 16y − 1 = 0 are collinear.

Prove that the radii of the circles x² + y² = 1, x² + y² − 2x − 6y − 6 = 0 and x² + y² − 4x − 12y − 9 = 0 are in A.P.

Find the equation of the circle which passes through the origin and cuts off chords of lengths 4 and 6 on the positive side of the x-axis and y-axis respectively.

Find the equation of the circle concentric with the circle x² + y² − 6x + 12y + 15 = 0 and double of its area.

Find the equation to the circle which passes through the points (1, 1) (2, 2) and whose radius is 1. Show that there are two such circles.

Find the equation of the circle concentric with x² + y² − 4x − 6y − 3 = 0 and which touches the y-axis.

If a circle passes through the point (0, 0),(a, 0),(0, b) then find the coordinates of its centre.

Find the equation of the circle which passes through the points (2, 3) and (4,5) and the centre lies on the straight line y − 4x + 3 = 0.

Find the equation of the circle, the end points of whose diameter are (2, −3) and (−2, 4). Find its centre and radius.

Find the equation of the circle the end points of whose diameter are the centres of the circles x² + y² + 6x − 14y − 1 = 0 and x² + y² − 4x + 10y − 2 = 0.