Reflection and Its Laws

The video tutorial explains the laws of reflection, starting with a brief introduction to reflection as the bouncing back of light from a smooth surface. It describes the components involved in reflection: incident ray, normal, and reflected ray. The historical context of the laws of reflection is provided, mentioning a Greek mathematician's contributions. The tutorial explains the laws of reflection, emphasizing that the angle of incidence equals the angle of reflection. An experiment is demonstrated using a laser light and a mirror to visually show the reflection of light.

What is the basic concept of reflection?

• Diffusion of light in all directions

• Refraction of light through a medium

• Bouncing back of light after hitting a surface

• Absorption of light by a surface

Which of the following is NOT a part of reflection?

• Incident ray

• Normal

• Refracted ray

• Reflected ray

What is the role of the normal in reflection?

• It is the path of the reflected ray

• It is the path of the incident ray

• It is the angle between the incident and reflected rays

• It is a line perpendicular to the surface at the point of incidence

In the context of reflection, what is an incident ray?

• A ray that is absorbed by the surface

• A ray that hits the surface

• A ray that is scattered in all directions

• A ray that passes through the surface

Who is credited with introducing the laws of reflection?

• A Greek mathematician

• Albert Einstein

• Isaac Newton

• Galileo Galilei

What did the Greek mathematician use to discover the laws of reflection?

• A lens and a flashlight

• A prism and sunlight

• A torch and a mirror

• A mirror and a candle

What does the first law of reflection state?

• The angle of incidence is less than the angle of reflection

• The angle of incidence is greater than the angle of reflection

• The angle of incidence is equal to the angle of reflection

• The angle of incidence is unrelated to the angle of reflection

What materials are needed for the reflection experiment demonstrated?

• A prism and a light bulb

• A laser light and a box with a mirror

• A flashlight and a glass of water

• A candle and a concave mirror

What does the experiment with the laser light demonstrate?

• The refraction of light

• The absorption of light

• The reflection of light

• The dispersion of light