PHYSICS
REFERENCE STUDY MATERIAL
for
CLASS – X
CHAPTER WISE CONCEPTS, FORMULAS AND
NUMERICALS INLCUDING HOTS PROBLEMS
Prepared by
M. S. KUMARSWAMY, TGT(MATHS)
M. Sc. Gold Medallist (Elect.), B. Ed.
Kendriya Vidyalaya GaCHiBOWLI
Prepared by: M. S. KumarSwamy, TGT(Maths) Page - A -
,Prepared by: M. S. KumarSwamy, TGT(Maths) Page - B -
, DEDICATED
TO
MY FATHER
LATE SHRI. M. S. MALLAYYA
Prepared by: M. S. KumarSwamy, TGT(Maths) Page - C -
, CHAPTER - 10
LIGHT – REFLECTION AND REFRACTION
LIGHT
An object reflects light that falls on it. This reflected light when received by our eyes,
enables us to see things.
Reflection of light
Reflection of light is the phenomenon of bouncing back of light in the same medium
on striking the surface of any object.
There are two types of reflection:
1. Regular reflection or Specular Reflection
2. Irregular reflection or Diffuse Reflection
Regular Reflection: When the reflecting surface is smooth and well polished, the
parallel rays falling on it are reflected parallel to one another, the reflected light goes
in one particular direction. This is Regular reflection or Specular reflection see below
figure.
Irregular reflection: When the reflecting surface is rough, the parallel rays falling on
it reflected in different direction, as shown in below fig. Such a reflection is known as
diffuse reflection or irregular reflection.
LAWS OF REFLECTION OF LIGHT
According to the laws of Reflection of light,
(i) The angle of incidence is equal to the angle of reflection, and
(ii) The incident ray, the normal to the mirror at the point of incidence and the
reflected ray, all lie in the same plane.
Prepared by: M. S. KumarSwamy, TGT(Maths) Page - 1 -
REFERENCE STUDY MATERIAL
for
CLASS – X
CHAPTER WISE CONCEPTS, FORMULAS AND
NUMERICALS INLCUDING HOTS PROBLEMS
Prepared by
M. S. KUMARSWAMY, TGT(MATHS)
M. Sc. Gold Medallist (Elect.), B. Ed.
Kendriya Vidyalaya GaCHiBOWLI
Prepared by: M. S. KumarSwamy, TGT(Maths) Page - A -
,Prepared by: M. S. KumarSwamy, TGT(Maths) Page - B -
, DEDICATED
TO
MY FATHER
LATE SHRI. M. S. MALLAYYA
Prepared by: M. S. KumarSwamy, TGT(Maths) Page - C -
, CHAPTER - 10
LIGHT – REFLECTION AND REFRACTION
LIGHT
An object reflects light that falls on it. This reflected light when received by our eyes,
enables us to see things.
Reflection of light
Reflection of light is the phenomenon of bouncing back of light in the same medium
on striking the surface of any object.
There are two types of reflection:
1. Regular reflection or Specular Reflection
2. Irregular reflection or Diffuse Reflection
Regular Reflection: When the reflecting surface is smooth and well polished, the
parallel rays falling on it are reflected parallel to one another, the reflected light goes
in one particular direction. This is Regular reflection or Specular reflection see below
figure.
Irregular reflection: When the reflecting surface is rough, the parallel rays falling on
it reflected in different direction, as shown in below fig. Such a reflection is known as
diffuse reflection or irregular reflection.
LAWS OF REFLECTION OF LIGHT
According to the laws of Reflection of light,
(i) The angle of incidence is equal to the angle of reflection, and
(ii) The incident ray, the normal to the mirror at the point of incidence and the
reflected ray, all lie in the same plane.
Prepared by: M. S. KumarSwamy, TGT(Maths) Page - 1 -
