Light, Shadows and Reflections Class 6 notes - Chapter 11

What is Light?

Light can be defined as the form of energy which helps us in seeing objects. Basically, when the light rays fall on an object, some of the rays are reflected in our eyes and it makes us see an object. Based on the emission of lights, objects are divided into luminous and non-luminous objects.

Luminous Object: The objects that produce light are called the luminous objects. The Sun, bulb, tube light, torch lighted candle are examples of luminous objects.

Non-luminous object: The objects that do not produce light are called the non-luminous object. Moon is an example of non-luminous objects.

What is the Propagation of Light

Light travels in a straight line. The propagation of light mainly refers to the process of transferring the electromagnetic waves from one point to another.

Important Questions

  1. What is Reflection?
  2. Explain how a shadow is formed.
  3. What are Luminous and Non-Luminous objects?
  4. What is the direction of propagation of light?
  5. Difference between Translucent, Transparent, and Opaque objects.

Learn more about the Light, Shadows, and Reflections from the topics given below:

Practise This Question

Which one of the following vitamin is needed for our bones and teeth?