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What is Reflection of Light? Video Lecture | Science Olympiad Class 7

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FAQs on What is Reflection of Light? Video Lecture - Science Olympiad Class 7

1. What is reflection of light?

Ans.Reflection of light is the bouncing back of light rays when they hit a smooth and shiny surface, such as a mirror. When light strikes an object, it can either be absorbed, transmitted, or reflected. The angle at which the light hits the surface is called the angle of incidence, and the angle at which it bounces back is called the angle of reflection. According to the law of reflection, these two angles are always equal.

2. What are the types of reflection?

Ans.There are two main types of reflection: regular (or specular) reflection and irregular (or diffuse) reflection. Regular reflection occurs on smooth surfaces, such as mirrors, where the light rays are reflected in a single direction, allowing for clear images. Irregular reflection happens on rough surfaces, where light rays are scattered in different directions, resulting in no clear image.

3. What is the law of reflection?

Ans.The law of reflection states that the angle of incidence is equal to the angle of reflection. This means that when a light ray strikes a reflective surface, the angle formed between the incoming ray and the normal (an imaginary line perpendicular to the surface) is the same as the angle formed between the outgoing ray and the normal. This principle helps explain how we see images in mirrors.

4. How does reflection of light help us in our daily lives?

Ans.Reflection of light plays a crucial role in our daily lives. It allows us to see objects clearly in mirrors, helps in the design of optical instruments like telescopes and microscopes, and is used in various technologies such as cameras and projectors. Additionally, understanding reflection helps us navigate safely, as we can see reflections of our surroundings, especially in vehicles.

5. What is the difference between reflection and refraction?

Ans.Reflection and refraction are two different behaviors of light. Reflection occurs when light bounces back after hitting a surface, while refraction is the bending of light as it passes from one medium to another, like from air into water. Refraction changes the direction of light due to a change in speed as it enters a different material, which can create effects like the bending of a straw in a glass of water.

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