Maths-
General
Easy
Question
The correct answer is:
Now 
is always real, then discriminant 
Related Questions to study
Maths-
If 
and
, then
If and
, then
Maths-General
Maths-
For any two sets 
and 
, if 
and 
for some set 
, then
For any two sets and , if and for some set , then
Maths-General
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The void relation on a set is
The void relation on a set is
Maths-General
Maths-
If 
, then 
is equal to
If , then is equal to
Maths-General
Physics-
The adjacent diagram shows a charge 
held on an insulating support 
and enclosed by a hollow spherical conductor. 
represents the centre of the spherical conductor and 
is a point such that 
and 
The electric field at point will be
The adjacent diagram shows a charge held on an insulating support and enclosed by a hollow spherical conductor. represents the centre of the spherical conductor and is a point such that and
The electric field at point will be
Physics-General
Physics-
Two large metal plates are placed parallel to each other. The inner surfaces of plates are charged by 
and
. The outer surfaces are neutral. The electric field is …… in the region between the plates and outside the plates
Two large metal plates are placed parallel to each other. The inner surfaces of plates are charged by and. The outer surfaces are neutral. The electric field is …… in the region between the plates and outside the plates
Physics-General
Physics-
A water molecule has an electric dipole moment 
when it is in vapour state. The distance in metre between the centre of positive and negative charge of the molecule is
A water molecule has an electric dipole moment when it is in vapour state. The distance in metre between the centre of positive and negative charge of the molecule is
Physics-General
Physics-
Consider the charge configuration and spherical Gaussian surface as shown in the figure. When calculating the flux of the electric field over the spherical surface the electric field will be due to
Consider the charge configuration and spherical Gaussian surface as shown in the figure. When calculating the flux of the electric field over the spherical surface the electric field will be due to
Physics-General
Physics-
The electric field due to a dipole at a distance 
on its axis is
The electric field due to a dipole at a distance on its axis is
Physics-General
Physics-
One metallic sphere is given positive charge whereas another identical sphere
of exactly same mass as of is given equal amount of negative charge. Then
One metallic sphere is given positive charge whereas another identical sphere
of exactly same mass as of is given equal amount of negative charge. Then
Physics-General
Physics-
If 
be the electric field strength of a short dipole at a point on its axial line and 
that on the equatorial line at the same distance, then
If be the electric field strength of a short dipole at a point on its axial line and that on the equatorial line at the same distance, then
Physics-General
Physics-
The charges 
are placed at the vertices of a right-angled isosceles triangle as shown. The net electrostatic energy of the configuration is zero if 
is equal to
The charges are placed at the vertices of a right-angled isosceles triangle as shown. The net electrostatic energy of the configuration is zero if is equal to
Physics-General
Physics-
The equivalent capacitance between and as shown in the figure is
The equivalent capacitance between and as shown in the figure is
Physics-General
Physics-
An electric dipole when placed in a uniform electric field 
will have minimum potential energy, if the positive direction of dipole moment makes the following angle with
An electric dipole when placed in a uniform electric field will have minimum potential energy, if the positive direction of dipole moment makes the following angle with
Physics-General
Maths-
Let 
and be two relations on a set 
Then, which one of the following is not true?
Let and be two relations on a set Then, which one of the following is not true?
Maths-General
