Let's do a quick revision

 

What is Light?

Light is a form of energy

Light helps us see objects

 

What is reflection of light?

When a ray of light strikes a mirror, it is reflected in a different direction

 

Laws of Reflection

There are 2 laws of Reflection

  • The Incident ray, Reflected ray and the Normal, all lie in the same plane
  • The Angle of Incidence is always equal to Angle of Reflection

Incident, Reflected and Normal Rays in the Mirror - Teachoo - 2.jpg

Image formed by plane mirror

In a plane mirror, image formed is behind the mirror

It looks like

Formation of Image in a Plane Mirror - teachoo.png

 

Properties of Image formed in Plane Mirror

  • Image is formed behind the mirror
  • Image is Virtual(Not real) and erect.
  • Image formed is of same size
  • The image formed is at the same distance behind the mirror as the object is in front of it.

 

What do we mean by real and virtual images?

Real images are formed in front of the mirror

Virtual images are formed behind the mirror

Example - Plane mirror forms Virtual image

 

What do we mean by erect and inverted image?

Erect image is a straight image

Inverted image is upside down

Example - Plane mirror forms Erect image

  1. Class 10
  2. Chapter 10 Class 10 - Light - Reflection and Refraction

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.