TYPES OF MIRRORS

By : Ameerhamza S B3rd year MBBS

Shimoga Institute of Medical SciencesShiomga

MIRROR : A mirror is an object ,smooth and well polished surface which reflects most of the light falling on it.

•Types of MirrorsoPlaneoSphericalConvexConcave

PLANE MIRROR :

Its erect or upright.It is virtual.It is laterally inverted.It lies along a line

joining object and surface which is perpendicular to the surface.

Size equals object.Its located as far behind

the reflecting surface as the object in front of it.

CURVED MIRRORSCONVEX MIRROR

Concave or convex mirrors form part of a sphere

POLE CENTRE OF CURVATURE (C) RADIUS OF CURVATURE (r) AXIS PRINCIPAL AXIS 1/u+1/v = 1/f = 2/r v – dist. of image frm

mirror u – dist. of object r – radius of curvatureM= -v/u M - magnification

Concave Mirror

Convex Mirror

Convex- smaller image

Concave- magnified image

REFERENCEComprehensive opthalmology by

A.K.Khurana(6th edition)Parsons’ Diseases of the Eye by Ramanjit

Sihota and Radhika Tandon(22nd edition)

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