Maths-
General
Easy
Question
If 
is the circumcircle of the triangle formed by three tangents to the parabola 
then radius of the circle is
- 1
- 3
- 5
- none of these
The correct answer is: 3
The circle passes through focus.
Related Questions to study
Maths-
A line bisecting the ordinate PN of a point 
on the parabola 
is drawn parallel to the axis to meet the curve at Q. If NQ meets the tangent at the vertex at the point T, then the coordinates of T are
A line bisecting the ordinate PN of a point on the parabola is drawn parallel to the axis to meet the curve at Q. If NQ meets the tangent at the vertex at the point T, then the coordinates of T are
Maths-General
Maths-
Three normals drawn from any point to the parabola y2 = 4ax cut the line x = 2a in points whose ordinates are in arithmetical progression. Then the tangents of the angles which the normals make the axis of the parabola are in :
Three normals drawn from any point to the parabola y2 = 4ax cut the line x = 2a in points whose ordinates are in arithmetical progression. Then the tangents of the angles which the normals make the axis of the parabola are in :
Maths-General
Maths-
PQ is a normal chord of the parabola y2 = 4ax at P, A being the vertex of the parabola. Through P a line is drawn parallel to AQ meeting the x-axis in R. Then the length of AR is :
PQ is a normal chord of the parabola y2 = 4ax at P, A being the vertex of the parabola. Through P a line is drawn parallel to AQ meeting the x-axis in R. Then the length of AR is :
Maths-General
Physics-
The particle A is converted to C via following reactions then
The particle A is converted to C via following reactions then
Physics-General
Physics-
If the atom 100Fm257 follows Bohr model and the radius of last orbit of 100Fm257 is n times the Bohr radius, then find n
If the atom 100Fm257 follows Bohr model and the radius of last orbit of 100Fm257 is n times the Bohr radius, then find n
Physics-General
physics-
he intensity of X-rays from a coolidge tuberin’s plotted against wavelength 
as shown the figure The minimum wavelength found is 
and the wavelength of the 
line is 
As the accelerating voltage is increased
he intensity of X-rays from a coolidge tuberin’s plotted against wavelength as shown the figure The minimum wavelength found is
and the wavelength of the line is As the accelerating voltage is increased
physics-General
Physics-
If A= B=C=1 and X =
+
+
, then X=
If A= B=C=1 and X =++ , then X=
Physics-General
Maths-
The tangent at P to a parabola y2 = 4ax meets the directrix at U and the latus rectum at V then SUV (where S is the focus) :
The tangent at P to a parabola y2 = 4ax meets the directrix at U and the latus rectum at V then SUV (where S is the focus) :
Maths-General
Maths-
Which one of the following equations represented parametrically, represents equation to a parabolic profile ?
Which one of the following equations represented parametrically, represents equation to a parabolic profile ?
Maths-General
physics-
In the circuit shown (Fig). if the diode forward voltage drop is 0.3V, the voltage difference between A and B is :
In the circuit shown (Fig). if the diode forward voltage drop is 0.3V, the voltage difference between A and B is :
physics-General
physics-
A 220V ac supply is connected between points A and B (Fig). What will be the potential difference V across the capacitor?
A 220V ac supply is connected between points A and B (Fig). What will be the potential difference V across the capacitor?
physics-General
Physics-
In the figure shown the potential drop across the series resistor is
In the figure shown the potential drop across the series resistor is
Physics-General
physics-
Find the effective resistance between A and B
Find the effective resistance between A and B
physics-General
physics-
Two ideal junction diodes D1, D2 are connected as shown in the figure. A 3V battery is connected between A and B. The current supplied by the battery if its positive terminal is connected to A is
Two ideal junction diodes D1, D2 are connected as shown in the figure. A 3V battery is connected between A and B. The current supplied by the battery if its positive terminal is connected to A is
physics-General
physics-
VA and VB denote potentials of A and B, then the equivalent resistance between A and B in the adjoining circuit is (ideal diode)
VA and VB denote potentials of A and B, then the equivalent resistance between A and B in the adjoining circuit is (ideal diode)
physics-General
