Maths
General
Easy
Question

 I
 O
 None of these
The correct answer is: O
It is obvious.
Book A Free Demo
+91
Grade*
Select Grade
Related Questions to study
maths
If then adj A
,
.
.
If then adj A
mathsGeneral
,
.
.
maths
Which of the following is not true
Every skew symmetric matrix of odd order is singular. So option (a) is incorrect.
Which of the following is not true
mathsGeneral
Every skew symmetric matrix of odd order is singular. So option (a) is incorrect.
maths
Which one of the following statements is true
If , then order of will be same to order of A. So it is a square matrix.
Which one of the following statements is true
mathsGeneral
If , then order of will be same to order of A. So it is a square matrix.
maths
The inverse of is
Let
.
.
The inverse of is
mathsGeneral
Let
.
.
maths
The inverse of matrix is
,
.
The inverse of matrix is
mathsGeneral
,
.
chemistry
respectively are
respectively are
chemistryGeneral
physics
Light is incident normally in face AB of a prism as shown in figure A liquid of refractive index m is placed on face AC of the prism The prism is made of glass of refractive index 3/2 The limits of m for which total internal reflection takes place on face AC is
Light is incident normally in face AB of a prism as shown in figure A liquid of refractive index m is placed on face AC of the prism The prism is made of glass of refractive index 3/2 The limits of m for which total internal reflection takes place on face AC is
physicsGeneral
physics
An observer can see through a pinhole the top end of a thin rod of height h, placed as shown in the figure The beaker height is 3h and its radius h When the beaker is filled with a liquid up to height 2h, he can see the lower end of the rod Then the refractive index of the liquid is
An observer can see through a pinhole the top end of a thin rod of height h, placed as shown in the figure The beaker height is 3h and its radius h When the beaker is filled with a liquid up to height 2h, he can see the lower end of the rod Then the refractive index of the liquid is
physicsGeneral
physics
A rectangular glass slab ABCD of refractive index n_{1} is immersed in water of refractive index A ray of light is incident a the surface AB of the slab as shown The maximum value of the angle of incidence a_{max}_{,} such that the ray comes out only from the other surface CD, is given by
A rectangular glass slab ABCD of refractive index n_{1} is immersed in water of refractive index A ray of light is incident a the surface AB of the slab as shown The maximum value of the angle of incidence a_{max}_{,} such that the ray comes out only from the other surface CD, is given by
physicsGeneral
physics
A light ray traveling in glass medium is incident on glassair interface at an angle of incidence q The reflected (R) and transmitted (T) intensitites, both as function of q , are plotted The correct sketch is
A light ray traveling in glass medium is incident on glassair interface at an angle of incidence q The reflected (R) and transmitted (T) intensitites, both as function of q , are plotted The correct sketch is
physicsGeneral
physics
A point source S is placed at the bottom of different layers as shown in the figure The refractive index of bottom most layer is m_{0} The refractive index of any other upper layer is ray of light with angle i slightly more than 30° starts from the source S Total internal reflection takes place at the upper surface of a layer having n equal to
A point source S is placed at the bottom of different layers as shown in the figure The refractive index of bottom most layer is m_{0} The refractive index of any other upper layer is ray of light with angle i slightly more than 30° starts from the source S Total internal reflection takes place at the upper surface of a layer having n equal to
physicsGeneral
physics
An insect starts moving up in a liquid from point O of variable refractive index where y is depth of liquid from the surface If u is the speed of insect, its apparent speed to the observer E immediatly after insect start moving
An insect starts moving up in a liquid from point O of variable refractive index where y is depth of liquid from the surface If u is the speed of insect, its apparent speed to the observer E immediatly after insect start moving
physicsGeneral
maths
If , then equals
.
If , then equals
mathsGeneral
.
maths
The inverse of the matrix is
Let
.
.
The inverse of the matrix is
mathsGeneral
Let
.
.
maths
The ad joint of is
Let, ;
.
.
The ad joint of is
mathsGeneral
Let, ;
.
.