Class 8 Light Chapter Notes

Reflection is the bouncing back of light rays from a surface.

Light is a form of energy that enables us to see objects.

Refraction is the bending of light rays as they pass from one medium to another of different optical density.

<p>Dispersion is the splitting of light into its constituent colors when passing through a prism or a medium with varying refractive indices.</p> Signup and view all the answers

<p>Interference is the interaction of two or more light waves, resulting in either reinforcement (constructive interference) or cancellation (destructive interference) of the waves.</p> Signup and view all the answers

<p>Incandescent bulbs, fluorescent tubes, LEDs</p> Signup and view all the answers

<p>Shadows are formed when light is obstructed by an opaque object, preventing it from reaching a surface.</p> Signup and view all the answers

<p>Due to the partial blocking of light.</p> Signup and view all the answers

<p>The lens helps in focusing light onto the retina.</p> Signup and view all the answers

<p>Photoreceptor cells (rods and cones) convert light into electrical signals on the retina.</p> Signup and view all the answers