Light💡🔦

Rectilinear Propagation of Light 💡

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💡 Light ALWAYS travels in straight line.

💡 Place 3 cardboards on one another, Place a candle at one end, and see at the other end. You will see the straight line.

Reflection of Light 💡

💡When Light falls on an object, a part of it is bounced off from its surface. When this bounced light falls on your eyes. And that's how we can see the Object.

💡 The bouncing off of the light falling on them is known as Reflection.

💡Objects with Smooth & Shiny surface or a Polished Metal reflect MORE LIGHT than an object with a with a dull surface.

💡 <I = <R -> Angle of Incidence = Angle of Reflection.

💡 You can see objects clearly only when the light reflects on a shiny surface like water and only when its STILL.

💡If you disturb one of the Cardboard , then you won't be able to see the Candle flame.

Types of Images💡

Properties of image formed by a plane mirror

Virtual Image💡

Real Image💡

It is formed on a screen💡

It cannot form on a screen💡

The light is coming from the virtual image💡

its Real Image is fallen in ours eyes ( Retina 👁 - the screen of the eye ) . 💡

This Image is smaller than the object and is upside down 💡

The Image is at the same distance behind the mirror as the object is in front of it💡

Image formed by a plane mirror is virtual, erect and of the same size as the object.💡

In the image formed by a plane mirror there is an interchange of left and right , this is called LATERAL INVERSION 💡