Vedclass
Class 11Mathematics10-1.Circle and System of CirclesEquations of circle
Medium

$A$ circle has its equation in the form $x^2 + y^2 + 2x + 4y + 1 = 0$. Choose the correct coordinates of its centre and the right value of its radius from the following:

  • A
    Centre $(-1, -2)$,radius $= 2$
  • B
    Centre $(2, 1)$,radius $= 1$
  • C
    Centre $(1, 2)$,radius $= 3$
  • D
    Centre $(-1, 2)$,radius $= 2$
Share

Explore More

Browse All

Question Bank

11

All Subjects

Class 11 Questions

Class 11

Mathematics Questions

Chapter

10-1.Circle and System of Circles

Subtopic

Equations of circle

Similar Questions

$A$ circle passes through the centre of another circle $x^2+y^2-3x-4y-1=0$ and its centre is $(5,2)$. Then the equation of this circle is.........

MediumAP EAMCET 2020
View Solution

The equation of the circle with centre at $(1, -2)$ and passing through the centre of the given circle $x^2 + y^2 + 2y - 3 = 0$ is

Medium
View Solution

The circle passing through $(1, -2)$ and touching the $x$-axis at $(3, 0)$ also passes through the point

DifficultJEE MAIN 2013
View Solution

The four distinct points $(0, 0), (2, 0), (0, -2)$ and $(k, -2)$ are concyclic,if $k =$

Medium
View Solution

If the equation of the circle having its centre in the second quadrant touches the coordinate axes and also the line $\frac{x}{5}+\frac{y}{12}=1$ is $x^2+y^2+2 \lambda x-2 \lambda y+\lambda^2=0$,then $\lambda=$

EasyAP EAMCET 2019
View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo