The equation of the tangent to the circle ${x^2} + {y^2} - 2x - 4y - 4 = 0$ which is perpendicular to $3x - 4y - 1 = 0$, is
$4x + 3y - 5 = 0$
$4x + 3y + 25 = 0$
$4x - 3y + 5 = 0$
$4x + 3y - 25 = 0$
If $2x - 4y = 9$ and $6x - 12y + 7 = 0$ are the tangents of same circle, then its radius will be
If a circle of radius $R$ passes through the origin $O$ and intersects the coordinate axes at $A$ and $B,$ then the locus of the foot of perpendicular from $O$ on $AB$ is
Circles $x^2 + y^2 + 4x + d = 0, x^2 + y^2 + 4fy + d = 0$ touch each other, if
Tangents are drawn from the point $(-1,-4)$ to the circle $x^2 + y^2 - 2x + 4y + 1 = 0$. Length of corresponding chord of contact will be-
Match the statements in Column $I$ with the properties Column $II$ and indicate your answer by darkening the appropriate bubbles in the $4 \times 4$ matrix given in the $ORS$.
Column $I$ | Column $II$ |
$(A)$ Two intersecting circles | $(p)$ have a common tangent |
$(B)$ Two mutually external circles | $(q)$ have a common normal |
$(C)$ two circles, one strictly inside the other | $(r)$ do not have a common tangent |
$(D)$ two branches of a hyperbola | $(s)$ do not have a common normal |