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
