LIGHT: REFLECTION
Light is a vast topic. So, I will be limited only to reflection.
Light has 2 types of nature-
1) Particle nature
2) Wave nature
let's define a few terms-
1) The centro of the reflecting surface of a spherical mirror is a point called the pole(P).
2) The reflecting surface of a spherical mirror forms a part of a sphere. This sphere has a centre.This point is called the centre of curvature(C).
3) The radius of the sphere of which the reflecting surface of a spherical mirror foems a part, is called the radius of curvature(R).
4) Principal axis is an imaginary straight line which passes through the pole and the centre of curvature of a spherical mirror.
What is REFLECTION?
REFLECTION is bouncing back of light from a source of incidence.
There are 2 ways of reflection-
1) REGULAR REFLECTION
2) IRREGULAR REFLECTION
1) REGULAR REFLECTION- If the reflecting surface is very smooth, the reflection of light that occurs is called specular or regular reflection.
2) IRREGULAR REFLECTION-
If the reflecting surface is not very smooth, the reflection of light that occurs is called irregular reflection.
LAWS OF REFLECTION-
1) The angle of incidence is equal to the angle of reflection
2) The incident ray, reflected ray and the normal ; all lie on the same plane.
These laws of reflection are applicable to all types of reflecting surfaces including the spherical mirror. Image formed by a plane mirror is always virtual and erect. The size of the image is equal to that of the object. The image formed is asw far behind the mirror as the object is in front of it.Further, the image is laterally inverted.
EXAMPLES OF REFLECTION IN EVERYDAY LIFE-
1) Particle nature
2) Wave nature
let's define a few terms-
1) The centro of the reflecting surface of a spherical mirror is a point called the pole(P).
2) The reflecting surface of a spherical mirror forms a part of a sphere. This sphere has a centre.This point is called the centre of curvature(C).
3) The radius of the sphere of which the reflecting surface of a spherical mirror foems a part, is called the radius of curvature(R).
4) Principal axis is an imaginary straight line which passes through the pole and the centre of curvature of a spherical mirror.
What is REFLECTION?
REFLECTION is bouncing back of light from a source of incidence.
There are 2 ways of reflection-
1) REGULAR REFLECTION
2) IRREGULAR REFLECTION
1) REGULAR REFLECTION- If the reflecting surface is very smooth, the reflection of light that occurs is called specular or regular reflection.
If the reflecting surface is not very smooth, the reflection of light that occurs is called irregular reflection.
LAWS OF REFLECTION-
1) The angle of incidence is equal to the angle of reflection
2) The incident ray, reflected ray and the normal ; all lie on the same plane.
These laws of reflection are applicable to all types of reflecting surfaces including the spherical mirror. Image formed by a plane mirror is always virtual and erect. The size of the image is equal to that of the object. The image formed is asw far behind the mirror as the object is in front of it.Further, the image is laterally inverted.
EXAMPLES OF REFLECTION IN EVERYDAY LIFE-
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