i) Differentiate between regular and diffused reflection, Does diffused
reflection mean the failure of the law of reflection?
ii) State the law of reflection.
iii) What is lateral inversion?
iv) Explain how you can take care of your eyes from light.
v) Draw a ray diagram of reflection of light and indicate.
vi) What is light? What is angle of reflection and angle of incidence?
Answers
Answer:
REGULAR AND DIFFUSED REFLECTION - DEFINITION
concept
Regular reflection occurs at the surface of a plane surface like a plane mirror. Reflected rays after regular reflection are parallel.
Diffused reflection occurs at the surface of a rough surface like cardboard. Reflected rays after regular reflection are not parallel.
Note: Laws of reflection are valid in both the cases.
REGULAR AND IRREGULAR REFLECTION - DEFINITION
concept
Regular Reflection:
1. Reflection from a polished surface is called regular reflection.
2. parallel rays remain parallel after reflection.
Irregular Reflection:
1. Reflection from a rough surface is called diffuse reflection.
2. Parallel rays do not remain parallel after reflection.
I) No, diffused reflection mean it is failure of law of reflection.
Regular reflection:-
It take place in plain and smooth surface.
It forms a clear image after reflection.
Example:- Reflection that take place in mirror.
Diffused reflection:-
It take place in uneven and rough surface.
It doesn't not form a clear or no image
example:-The light reflected by wall
ii) The incident ray ,reflected ray and the normal all lies in the same plane.
The angle of incidence= the angle of reflection
iii) Lateral inversion mean apparent reverse of an object (right appearing left and left appearing right)
iv) Blink ur eyes frequently when you are useing phone or computer.
wear protective glasses.
v) it is a concave mirror
vi) Light is a form of energy that enable to see things arround us.
Angle of reflection:-
The angle made by reflected ray.
Angle of incidence:-
The angle made by incident ray.