This document discusses curved mirrors and their properties. It notes that curved mirrors have surfaces shaped like parts of spheres and defines convex and concave mirrors. Convex mirrors bulge outward and produce virtual images, while concave mirrors bulge inward and can produce real or virtual images depending on the object position. Examples of uses of each type of mirror are provided, such as passenger side car mirrors using convex mirrors and telescopes and makeup mirrors using concave mirrors. The key differences in image formation between convex and concave mirrors are also summarized.

1. Curved mirrorsCurved mirrors

2.  CURVED MIRRORSCURVED MIRRORS
• A curved mirror is a mirror with a curved reflectiveA curved mirror is a mirror with a curved reflective
surface, which may be either bulging outward orsurface, which may be either bulging outward or
bulging inward.bulging inward.
• Most curved mirrors have surfaces that are shapedMost curved mirrors have surfaces that are shaped
like part of a sphere.like part of a sphere.
• But other shapes are sometimes used in opticalBut other shapes are sometimes used in optical
devices, the most common non-spherical type aredevices, the most common non-spherical type are
parabolic reflectorsparabolic reflectors

3.  TypES Of MIRRORSTypES Of MIRRORS
• Curved mirrors are broadly divided into 2 types:
i. Convex mirrors : the mirrors which are bulged out
wards.
ii. Concave mirrors : the mirror which is bulged
inwards.

4. o COnVEx MIRRORSCOnVEx MIRRORS
• A convex mirror, fish eye mirror or diverging
mirror, is a curved mirror in which the reflective
surface bulges toward the light source.
• Convex mirrors reflect light outwards, therefore
they are not used to focus light.
• Such mirrors always form a virtual image, since the
focus (F) and the centre of curvature (2F) are both
imaginary points "inside" the mirror, which cannot
be reached.
• Thus the image cannot be caught on a screen
• These mirrors are “diverging”.

5. Uses of convex mirrorUses of convex mirror
• Passenger-side mirror on a car is typically convex mirror.
• They provide a wider field of view as they are curved
outwards.
• These mirrors are often found in the hallway of various
buildings commonly known as “hallway safety mirrors.
• Convex mirrors are used in some automated teller
machines as a simple and handy security feature, allowing
the users to see what is happening behind them.

6. image formation in convex mirror
• Object position : between F and 2F
• Image position : between f and mirror
• Nature of image : virtual, upright and smaller

7.  concave mirrorconcave mirror
• A concave mirror, or converging mirror, has
a reflecting surface that bulges inward (away from
the incident light).
• Concave mirrors reflect light inward to one focal
point.
• They are used to focus light.
• Unlike convex mirrors, concave mirrors show
different image types depending on the distance
between the object and the mirror.
• These mirrors are called "converging"

8. Uses of concave mirrorsUses of concave mirrors
• Concave mirrors are used in some telescopes.
• They are also used to provide a magnified image of the
face for applying make-up or shaving.
• They are used by the dentists to see larger image of the
patients teeth.
• It is used to see larger size
of the image..

9. Image formatIon In concave mIrror
• Object position : between focal point and mirror
• Image position : at 2F
• Nature of image : Virtual, Upright and
magnified

10. • Object position : object at focal point
• Image position : at infinity
• Nature of image : either real or virtual, uprigt or inverted

11. • Object position : between focus and centre of curvature
• Image position : real, inverted and magnified
• Nature of image : Beyond 2F

12. • Object position : Object at centre of curvature
• Image position : Image at centre of curvature
• Nature of image : Real, inverted and magnifieed

13. • Object position : Object beyond centre of curvature
• Image position : at infinity
• Nature of image : either real or virtual, uprigt or inverted

14. Thank You
Done by
P.Dhanush
Tenth ckass
Narayana e-techno