Importance of Light in Nature

Light is electromagnetic radiation that causes the sensation of vision. It helps us see the wonders of nature and man-made objects in our surroundings.

Polished surfaces absorb less light and reflect maximum light, creating clear images.

A surface that reflects light and creates clear images is called a mirror.

<p>The two main types of mirrors are plane mirrors and spherical mirrors.</p> Signup and view all the answers

<p>Plane mirrors are made by coating the back surface of a flat and smooth glass piece with a thin, reflecting film of aluminium or silver.</p> Signup and view all the answers

<p>Another coat of a substance like lead oxide is given over the reflecting film to protect it and make that side opaque.</p> Signup and view all the answers

<p>Reflected rays appear to be coming from a point behind the mirror, creating a virtual image.</p> Signup and view all the answers

<p>They are reflected back in the perpendicular direction.</p> Signup and view all the answers

<p>The reflected rays appear to meet at the image point behind the mirror.</p> Signup and view all the answers

<p>The reflected rays do not actually meet; they only appear to be coming from a point behind the mirror.</p> Signup and view all the answers

<p>An extended image of the whole source is formed.</p> Signup and view all the answers

<p>The perpendicular distance of the image from the mirror is equal to the perpendicular distance of the source from the mirror.</p> Signup and view all the answers