Concave lens

Always virtual image

Changing position of image

Wax paper

Image obtained on screen

Convex mirror

Used by dentists

White light composed

Concave mirror

Refraction of light

Thinner in the middle

Concave lens

Lateral inversion

Translucent

Real image

Reflecting surface is bulged out

Concave mirror

Seven colours

Reflecting surface is in curving

The phenomenon which is involved in the formation of image of an object by a convex mirror